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@string{info = {References for Knowledge Representation}}
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@string{currentuser = {DIEGO}}
@string{info01 = {Time-stamp: "2001-11-02 11:06:53 calvanes"}}
@string{info02 = {Note sull'uso:}}
@string{info03 = {- Prima di fare modifiche sostituire "NESSUNO" con il}}
@string{info04 = {  proprio nome e salvare}}
@string{info05 = {- Finito l'editing sostituire il proprio nome con "NESSUNO"}}
@string{info06 = {  aggiornare il log e salvare}}
@string{info07 = {- Se al momento di aprire il file si vede che e` gia` usato}}
@string{info08 = {  da qualcuno NON fare modifiche e NON SALVARE}}
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@string{info10 = {For string definitions import as bibliography-file one of:}}
@string{info11 = { - short-string.bib}}
@string{info12 = { - medium-string.bib}}
@string{info13 = { - long-string.bib}}
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@TechReport{Aber96,
  author =       "Johan {\AA}berg",
  title =        "Creating a Description Logics Knowledge Base for
                  World Wide Web Documents",
  institution =  "Department of Computer and Information Science, 
                  Link{\"o}ping University, Sweden",
  number =       "LiTH-IDA-Ex-9641",
  year =         1996
}

@Article{Abit90,
   author =      "Serge Abiteboul",
   title =       "Towards a Deductive Object-Oriented Database Language",
   journal =     DKE,
   volume =      5,
   pages =       "263--287",
   year =        1990
}

@InProceedings{Abit97,
  author =       "Serge Abiteboul",
  title =        "Querying Semi-Structured Data",
  booktitle =    ICDT-97,
  year =         1997,
  pages =        "1--18"
}

@InProceedings{Abit99,
  author =       "Serge Abiteboul",
  title =        "On views and {XML}",
  booktitle =    PODS-99,
  pages =        "1--9",
  year =         1999,
}

@Book{AbBS99,
  author =       "Serge Abiteboul and Peter Buneman and Dan Suciu",
  title =        "Data on the {W}eb: {F}rom Relations to Semistructured Data
                  and {XML}",
  publisher =    MK,
  year =         1999,
}

@Article{ACCMM97,
  author =       "Serge Abiteboul and Sophie Cluet and Vassilis Christophides
                  and Tova Milo and Guido Moerkotte,
                  J{\'e}r{\^o}me Sim{\'e}on",
  title =        "Querying Documents in Object Databases",
  journal =      JODL,
  year =         1997,
  volume =       1,
  number =       1,
  pages =        "5--19"
}

@InProceedings{AbCM97,
  author =       "Serge Abiteboul and Sophie Cluet and Tova Milo",
  title =        "Correspondence and Translation for Heterogeneous Data",
  booktitle =    ICDT-97,
  pages =        "351--363",
  year =         1997,
}

@Article{ACMM*99,
  author =       "Serge Abiteboul and Sophie Cluet and Tova Milo and
                  Pini Mogilevsky and J{\'e}r{\^o}me Sime{\'e}on  and
                  Sagit Zohar",
  title =        "Tools for Data Translation and Integration",
  journal =      IEEEBDE,
  volume =       22,
  number =       1,
  pages =        "3--8",
  year =         1999,
}

@InProceedings{ACPS96,
  author =       "S. Adali and K. S. Candan and Y. Papakonstantinou and
                  V. S. Subrahmanian",
  title =        "Query Caching and Optimization in Distributed Mediator
                  Systems",
  booktitle =    SIGMOD,
  year =         1996,
  pages =        "137--148"
}

@InProceedings{AbBo91,
  author =       "Serge Abiteboul and Anthony Bonner",
  title =        "Objects and Views",
  booktitle =    SIGMOD,
  year =         "1991",
  pages =        "238--247",
  address =      "New York (NY, USA)",
  editor =       "J. Clifford and R. King",
}

@InProceedings{AbCM93,
  author =       "Serge Abiteboul and Sophie Cluet and Tova Milo",
  title =        "Querying and Updating the File",
  pages =        "73--84",
  booktitle =    VLDB-93,
  year =         1993
}

@InProceedings{AbDu98,
  author =       "Serge Abiteboul and Oliver Duschka",
  title =        "Complexity of Answering Queries Using Materialized Views",
  booktitle =    PODS-98,
  year =         1998,
  pages =        "254--265"
}

@Article{AbGr91,
  author =       "Serge Abiteboul and St\'ephane Grumbach",
  title =        "A Rule-Based Language with Functions and Sets",
  journal =      TODS,
  year =         1991,
  volume =       16,
  number =       1,
  pages =        "1--30"
}

@Article{AbHu87,
  author =       "Serge Abiteboul and Richard Hull",
  title =        "{IFO}: A Formal Semantic Database Model",
  journal =      TODS,
  year =         1987,
  volume =       12,
  number =       4,
  pages =        "297--314"
}

@Book{AbHV95,
  author =       "Serge Abiteboul and Richard Hull and Victor Vianu",
  title =        "Foundations of Databases",
  publisher =    AW,
  year =         "1995",
}

@InProceedings{AbKa89,
  author =       "Serge Abiteboul and Paris Kanellakis",
  title =        "Object Identity as a Query Language Primitive",
  booktitle =    SIGMOD,
  year =         "1989",
  pages =        "159--173",
}

@TechReport{AKRW92,
  author =       "S. Abiteboul and P. Kanellakis and S. Ramaswamy and
                  E. Waller",
  title =        "Method Schemas",
  institution =  "Brown University",
  year =         1992,
  number =       "CS-92-33",
  note =         "An earlier version appeared in {\it Proc.\ of the 9th Symp.\
                  on Principles of Database Systems PODS-90}",
}

@Article{AQMWW97,
  author =       "Serge Abiteboul and Dallan Quass and Jason McHugh and
                  Jennifer Widom and Janet L. Wiener",
  title =        "The {L}orel Query Language for Semistructured Data",
  journal =      JODL,
  year =         1997,
  volume =       1,
  number =       1,
  pages =        "68--88"
}

@InProceedings{AbVi91,
  author =       "Serge Abiteboul and Victor Vianu",
  title =        "Generic Computation and its Complexity",
  booktitle =    STOC-91,
  year =         1991,
  pages =        "209--219"
}

@InProceedings{AbVi97,
  author =       "Serge Abiteboul and Victor Vianu",
  title =        "Regular Path Queries with Constraints",
  booktitle =    PODS-97,
  pages =        "122--133",
  year =         1997
}

@InCollection{Abri74,
  author =       "J. R. Abrial",
  title =        "Data Semantics",
  booktitle =    "Data Base Management",
  editor =       "J. W. Klimbie and K. L. Koffeman",
  publisher =    NH,
  year =         1974,
  pages =        "1--59",
}

@TechReport{Acze88,
  author =       "Peter Aczel",
  title =        "Non-Well-Founded Sets",
  institution =  "CSLI/Stanford",
  number =       "volume 14 of {\it CSLI Lecture Notes}",
  year =         1988
}

@InProceedings{AfGK99,
  author =       "Foto N. Afrati and Manolis Gergatsoulis and Theodoros
                  Kavalieros",
  title =        "Answering Queries Using Materialized Views with Disjunction",
  booktitle =    ICDT-99,
  pages =        "435--452",
  year =         1999,
  volume =       1540,
  series =       LNCS,
  publisher =    SV
}

@InProceedings{AKWS95,
  author =       "Shailesh Agarwal and Arthur M. Keller and Gio Wiederhold and
                  Krishna Saraswat",
  title =        "Flexible Relation: {A}n Approach for Integrating Data from
                  Multiple, Possibly Inconsistent Databases",
  booktitle =    ICDE-95,
  year =         1995,
  pages =        "495--504"
}

@Article{AhSU79,
  author =       "A. V. Aho and Y. Sagiv and J. D. Ullman",
  title =        "Efficient Optimization of a Class of Relational Expressions",
  journal =      TODS,
  year =         1979,
  volume =       4,
  pages =        "297--314"
}

@Article{AhSU79b,
  author =       "A. V. Aho and Y. Sagiv and J. D. Ullman",
  title =        "Equivalence among Relational Expressions",
  journal =      SIAM-JOC,
  year =         1979,
  volume =       8,
  pages =        "218--246"
}

@Article{AiLN89,
  author =       "Luigia Aiello and Maurizio Lenzerini and Daniele Nardi",
  title =        "La Rappresentazione della Conoscenza in
                  Intelligenza Artificiale",
  journal =      RI,
  year =         1989,
  pages =        "93--110",
  volume =       "XIX",
  number =       2
}

@Article{AiNa86,
  author =       "H. A{\"{\i}}t-Kaci and R. Nasr",
  title =        "{LOGIN}: {A} Logic Programming Language with Built-in
                  Inheritance",
  journal =      JLP,
  pages =        "185--215",
  year =         1986,
  volume =       3
}

@InProceedings{AlGO91,
  author =       "A. Albano and G. Ghelli and R. Orsini",
  title =        "A Relationship Mechanism for Strongly Typed
                  {O}bject-{O}riented Database Programming Languages",
  booktitle =    VLDB-91,
  address =      "Barcelona (Spain)",
  year =         1991,
  pages =        "565--575"
}

@InProceedings{Albe96,
  author =       "Joseph Albert",
  title =        "Data Integration in the {RODIN} Multidatabase System",
  booktitle =    CoopIS-96,
  year =         1996,
  pages =        "48--57"
}

@Article{Alle83,
  author =       "James F. Allen",
  title =        "Maintaining Knowledge about Temporal Intervals",
  journal =      CACM,
  volume =       "26",
  number =       "11",
  pages =        "832--843",
  year =         "1983",
}

@InCollection{Alle93b,
  author =       "James F. Allen",
  title =        "Natural Language, Knowledge Representation, and Logical
                  Form",
  booktitle =    "Challenges in Natural Language Processing",
  editor =       "M. Bates and R. Weischedel",
  publisher =    CUP,
  year =         1993,
}

@InProceedings{AJRR89,
  author =       "J. Allgayer and R. Jansen-Winkeln and C. Reddig and
                  N. Reithinger",
  title =        "Bidirectional Use of Knowledge in the Multi-Modal {NL} Access
                  System {XTRA}",
  year =         1989,
  booktitle =    IJCAI-87,
}

@InProceedings{AmDP91,
  author =       "S. Amarger and D. Dubois and H. Prade",
  title =        "Constraint Propagation with Imprecise Conditional
                  Probabilities",
  booktitle =    "Proc.\ of the 7th Annual Conf.\ on Uncertainty in Artificial
                  Intelligence (UAI'91)",
  pages =        "26--34",
  publisher =    MK,
  year =         1991,
}

@InProceedings{AnMR96,
  author =       "E. Andr{\'e} and J. M{\"u}ller and T. Rist",
  title =        "{WIP/PPP}: {A}utomatic Generation of Personalized Multimedia
                  Presentations",
  booktitle =    "Proc. of the 4th ACM Int.\ Multimedia Conference
                  (Multimedia'96)",
  year =         1996,
  pages =        "407-408",
}

@Article{AnRi95,
  author =       "Elisabeth Andr{\'e} and Thomas Rist",
  title =        "Generating Coherent Presentations Employing Textual and
                  Visual Material",
  year =         1995,
  journal =      AIR,
  volume =       9,
  number =       "2/3",
  pages =        "147-165",
}

@TechReport{AnBN96,
  author =       "Hajnal Andr{\'e}ka and Johan van Benthem and Istva{\'a}n
                  N{\'e}meti",
  title =        "Modal Languages and Bounded Fragments of Predicate Logic",
  institution =  "ILLC, University of Amsterdam",
  year =         1996,
  number =       "ML-96-03",
}

@InProceedings{AnBN92,
  author =       "T. W. Anwar and H. Beck and S. Navathe",
  title =        "Knowledge Mining by Imprecise Querying: {A}
                  Classification-Based Approach",
  booktitle =    ICDE-92,
  year =         1992,
  pages =        "622--630",
}

@PhdThesis{Arec00,
  author =       "Carlos Areces",
  title =        "Logic Engineering. {T}he Case of Description and Hybrid
                  Logics",
  school =       "Institute for Logic, Language and Computation",
  year =         2000,
  address =      "University of Amsterdam",
  note =         "ILLC Dissertation Series 2000--5",
}

@InProceedings{ArBM99,
  author =       "Carlos Areces and Patrick Blackburn and Maarten Marx",
  title =        "A Road-map on Complexity for Hybrid Logics",
  booktitle =    CSL-99,
  year =         1999,
  pages =        "307--321",
  series =       LNCS,
  volume =       1683,
  publisher =    SV,
}

@Article{ArBM00,
  author =       "Carlos Areces and Patrick Blackburn and Maarten Marx",
  title =        "The Computational Complexity of Hybrid Temporal Logics",
  journal =      IGPL,
  year =         2000,
  volume =       8,
  number =       5,
}

@InProceedings{ArDe98,
  author =       "Carlos Areces and Marteen {de Rijke}",
  title =        "Expressiveness Revisited",
  booktitle =    DL-98,
  year =         1998,
  publisher =    "CEUR Electronic Workshop Proceedings,
                  http://ceur-ws.org/Vol-11/",
}

@Article{ACHK93,
  author =       "Y. Arens and C. Y. Chee and C. Hsu and C. A. Knoblock",
  title =        "Retrieving and Integrating Data from Multiple Information
                  Sources",
  journal =      JICIS,
  year =         1993,
  volume =       2,
  number =       2,
  pages =        "127--158"
}

@Article{ArKS96,
  author =       "Y. Arens and C. A. Knoblock and W. Shen",
  title =        "Query Reformulation for Dynamic Information Integration",
  journal =      JIIS,
  year =         1996,
  volume =       6,
  pages =        "99--130"
}

@Article{ArCS96,
  author =       "Alessandro Artale and Francesca Cesarini and Giovanni Soda",
  title =        "Describing Database Objects in a Concept Language
                  Environment",
  journal =      TKDE,
  year =         1996,
  volume =       8,
  number =       2,
  pages =        "345--351"
}

@InProceedings{ArFr94,
  author =       "Alessandro Artale and Enrico Franconi",
  title =        "A Computational Account for a Description Logic of Time
                  and Action",
  booktitle =    KR-94,
  pages =        "3--14",
  address =      "Bonn (Germany)",
  editor =       "J. Doyle and E. Sandewall and P. Torasso",
  publisher =    MK,
  year =         1994
}

@Article{ArFr98,
  author =       "Alessandro Artale and Enrico Franconi",
  title =        "A Temporal Description Logic for Reasoning about Actions and
                  Plans",
  journal =      JAIR,
  volume =       9,
  pages =        "463--506",
  year =         1998,
}

@InCollection{ArFr01,
  author =       "Alessandro Artale and Enrico Franconi",
  title =        "Temporal Description Logics",
  booktitle =    "Handbook of Time and Temporal Reasoning in Artificial
                  Intelligence",
  publisher =    MIT,
  year =         2001,
  editor =       "D. Gabbay and M. Fisher and L. Vila",
}

@InProceedings{AFMW01,
  author =       "Alessandro Artale and Enrico Franconi and Milenko Mosurovic
                  and Frank Wolter and Michael Zakharyaschev",
  title =        "The {$\mathcal{DLR}$(US)} Temporal Description Logic",
  booktitle =    DL-01,
  year =         2001,
}

@InProceedings{ArFG96,
  author =       "Alessandro Artale and Enrico Franconi and Nicola Guarino",
  title =        "Open Problems with Part-Whole Relations",
  booktitle =    DL-96,
  series =       "AAAI Technical Report",
  number =       "WS-96-05",
  publisher =    AAAIP,
  year =         1996,
  pages =        "70--73"
}

@Article{AFGP96,
  author =       "Alessandro Artale and Enrico Franconi and Nicola Guarino and
                  Luca Pazzi",
  title =        "Part-Whole Relations in Object-Centered Systems: {A}n
                  Overview",
  journal =      DKE,
  year =         1996,
  volume =       20,
  pages =        "347--383"
}

@InProceedings{AtSi81,
  author =       "Giuseppe Attardi and Maria Simi",
  title =        "Consistency and Completeness of {\sc omega}, a Logic
                  for Knowledge Representation",
  booktitle =    IJCAI-81,
  year =         1981,
  pages =        "504--510",
}

@Book{AtDe93,
  author =       "Paolo Atzeni and Valeria De Antonellis",
  title =        "Relational Database Theory",
  publisher =    BC,
  year =         1993,
}

@InProceedings{AtPa86,
  author =       "P. Atzeni and D. S. {Parker Jr.}",
  title =        "Formal Properties of Net-Based Knowledge
                  Representation Schemes",
  booktitle =    DE-86,
  address =      "Los Angeles (USA)",
  year =         1986,
  pages =        "700--706",
}

%bbbbbbbbbbbbbbbbbbbbbbbbb
%bbbbbbbbbbbbbbbbbbbbbbbbb

@TechReport{Baad90,
  author =       "Franz Baader",
  title =        "Terminological Cycles in {KL-ONE}-based Knowledge
                  Representation Languages",
  institution =  DFKI,
  address =      "Kaiserslautern (Germany)",
  number =       "RR-90-01",
  year =         1990,
  note =         "An abridged version appeared in \begingroup\em " # AAAI-90
                 # "\endgroup, pp.~621--626",
}

@TechReport{Baad90b,
  author =       "Franz Baader",
  title =        "Augmenting Concept Languages by Transitive Closure of
                 Roles: An Alternative to Terminological Cycles",
  institution =  DFKI,
  address =      "Kaiserslautern (Germany)",
  number =       "RR-90-13",
  year =         1990,
  note =         "An abridged version appeared in \begingroup\em " # IJCAI-91
                 # "\endgroup, pp.~446--451",
}

@InProceedings{Baad90c,
  author =       "Franz Baader",
  title =        "Terminological Cycles in {KL-ONE}-based Knowledge
                 Representation Languages",
  booktitle =    AAAI-90,
  year =         1990,
  address =      "Boston (Ma, USA)",
  pages =        "621--626"
}

@InProceedings{Baad91,
  author =       "Franz Baader",
  title =        "Augmenting Concept Languages by Transitive Closure
                 of Roles: An Alternative to Terminological Cycles",
  booktitle =    IJCAI-91,
  year =         1991
}

@Article{Baad96,
  author =       "Franz Baader",
  title =        "A Formal Definition for the Expressive Power of
                  Terminological Knowledge Representation Languages",
  journal =      JLC,
  year =         1996,
  volume =       6,
  pages =        "33-54"
}
                  
@Article{Baad96b,
  author =       "Franz Baader",
  title =        "Using Automata Theory for Characterizing the Semantics of
                  Terminological Cycles",
  journal =      AMAI,
  year =         1996,
  volume =       18,
  pages =        "175--219"
}

@Article{BaBH96,
  author =       "Franz Baader and Martin Buchheit and Bernhard Hollunder",
  title =        "Cardinality Restrictions on Concepts",
  journal =      AIJ,
  volume =       88,
  number =       "1--2",
  pages =        "195--213",
  year =         1996,
}

@TechReport{BBJN95,
  author =       "Franz Baader and Martin Buchheit and Manfred A. Jeusfeld and
                  Werner Nutt (Eds.)",
  title =        "{KRDB-95}: {R}easoning about Structured Objects:
                  {K}nowledge Representation meets Databases",
  institution =  DFKI,
  year =         1995,
  type =         "{D}ocument",
  number =       "D-95-12",
  series =       "DFKI-Research-Report",
  address =      "Saarbr{\"u}cken (Germany)"
}

@TechReport{BBHH91,
  author =       "Franz Baader and Hans-J{\"u}rgen B{\"u}rkert and
                 Jochen Heinsohn and Bernhard Hollunder and J{\"u}rgen
                 M{\"u}ller and Bernard Nebel and Werner Nutt and
                 Hans-J{\"u}rgen Profitlich",
  title =        "Terminological Knowledge Representation: {A} Proposal
                 for a Terminological Logic",
  year =         1991,
  institution =  DFKI,
  address =      "Kaiserslautern (Germany)",
  number =       "TM-90-04",
}

@InProceedings{BBHN90,
  author =       "Franz Baader and Hans-J{\"u}rgen B{\"u}rckert and Bernhard
                  Hollunder and Werner Nutt and J{\"o}rg H. Siekmann",
  title =        "Concept Logics",
  booktitle =    "Computational Logics, Symposium Proceedings",
  year =         1990,
  pages =        "177--201",
  editor =       "John W. Lloyd",
  publisher =    SV,
}

@Article{BBNNS93,
  author =       "Franz Baader and Hans-J{\"u}rgen B{\"u}rckert and Bernhard
                  Nebel and Werner Nutt and Gert Smolka",
  title =        "On the Expressivity of Feature Logics with Negation,
                  Functional Uncertainty, and Sort Equations",
  journal =      JLLI,
  volume =       2,
  pages =        "1--18",
  year =         1993,
}   

@InProceedings{BFHN*92,
  author =       "Franz Baader and Enrico Franconi and Bernhard Hollunder and
                  Bernhard Nebel and Hans-J{\"u}rgen Profitlich",
  title =        "An Empirical Analysis of Optimization Techniques for
                  Terminological Representation Systems, or: Making {KRIS} Get
                  a Move on",
  booktitle =    KR-92,
  pages =        "270--281",
  year =         1992,
}

@Article{BFHN*94,
  author =       "Franz Baader and Enrico Franconi and Bernhard Hollunder and
                  Bernhard Nebel and Hans-J{\"u}rgen Profitlich",
  title =        "An Empirical Analysis of Optimization Techniques for
                  Terminological Representation Systems or: Making {KRIS} get a
                  move on",
  journal =      "Applied Artificial Intelligence. Special Issue on Knowledge
                  Base Management",
  year =         1994,
  volume =       4,
  pages =        "109--132",
}

@InProceedings{BaHa91,
  author =       "Franz Baader and Philipp Hanschke",
  title =        "A Schema for Integrating Concrete Domains into Concept
                 Languages",
  booktitle =    IJCAI-91,
  year =         1991,
  pages =        "452--457",
}

@TechReport{BaHa91b,
  author =       "Franz Baader and Philipp Hanschke",
  title =        "A Scheme for Integrating Concrete Domains into Concept
                  Languages",
  institution =  DFKI,
  number =       "RR-91-10",
  year =         1991,
}

@InProceedings{BaHa92,
  author =       "Franz Baader and Philipp Hanschke",
  title =        "Extensions of Concept Languages for a Mechanical Engineering
                  Application",
  booktitle =    KI-92,
  year =         1992,
  publisher =    SV,
  pages =        "132--143",
  address =      "Bonn (Germany)",
  series =       LNCS,
  volume =       671,
}

@InProceedings{BaHo91,
  author =       "Franz Baader and Bernhard Hollunder",
  title =        "A Terminological Knowledge Representation System with
                 Complete Inference Algorithm",
  booktitle =    "Proc.\ of the Workshop on Processing Declarative
                 Knowledge (PDK'91)",
  series =       LNAI,
  publisher =    SV,
  year =         1991,
  volume =       567,
  pages =        "67--86",
}

@Article{BaHo91b,
  author =       "Franz Baader and Bernhard Hollunder",
  title =        "{$\mathcal{KRIS}$}: {$\mathcal{K}$}nowledge
                  {$\mathcal{R}$}epresentation and {$\mathcal{I}$}nference
                  {$\mathcal{S}$}ystem",
  journal =      SIGART,
  year =         1991,
  volume =       2,
  number =       3,
  pages =        "8--14",
}

@InProceedings{BaHo92,
  author =       "Franz Baader and Bernhard Hollunder",
  title =        "Embedding Defaults into Terminological Knowledge
                 Representation Formalisms",
  booktitle =    KR-92,
  publisher =    MK,
  year =         1992,
  pages =        "306--317",
}

@InProceedings{BaHo93,
  author =       "Franz Baader and Bernhard Hollunder",
  title =        "How to Prefer More Specific Defaults in Terminological
                 Default Logic",
  booktitle =    IJCAI-93,
  year =         1993,
  publisher =    MK,
  pages =        "669--674",
}

@TechReport{BaHo93b,
  author =       "Franz Baader and Bernhard Hollunder",
  title =        "Cardinality Restrictions on Concepts",
  institution =  DFKI,
  year =         1993,
  number =       "RR-03-48"
}

@Article{BaHo95,
  author =       "Franz Baader and Bernhard Hollunder",
  title =        "Embedding Defaults into Terminological Knowledge
                 Representation Formalisms",
  journal =      JAR,
  year =         1995,
  volume =       14,
  pages =        "149--180"
}

@Article{BaHo95b,
  author =       "Franz Baader and Bernhard Hollunder",
  title =        "Priorities on Defaults with Prerequisites and Their
                  Application in Treating Specificity in Terminological
                  Default Logic",
  journal =      JAR,
  year =         1995,
  volume =       14,
  pages =        "41--68"
}

@InProceedings{BHNPF92,
  author =       "Franz Baader and Bernhard Hollunder and Bernhard Nebel
                 and Hans-J{\"u}rgen Profitlich and Enrico Franconi",
  title =        "An Empirical Analysis of Optimization Techniques for
                 Terminological Representation Systems",
  booktitle =    KR-92,
  publisher =    MK,
  year =         1992,
  pages =        "270--281",
}

@InProceedings{BaKu98,
  author =       "Franz Baader and Ralf K{\"u}sters",
  title =        "Computing the Least Common Subsumer and the Most Specific
                  Concept in the Presence of Cyclic {$\mathcal{ALN}$}-Concept
                  Descriptions",
  booktitle =    KI-98,
  publisher =    SV,
  series =       LNCS,
  volume =       1504,
  year =         1998,
  pages =        "129--140",
}

@InProceedings{BaKu99,
  author =       "Franz Baader and Ralf K{\"u}sters",
  title =        "Matching in Description Logics with Existential
                  Restrictions",
  booktitle =    DL-99,
  year =         1999,
  publisher =    "CEUR Electronic Workshop Proceedings,
                  http://ceur-ws.org/Vol-22/",
}

@TechReport{BaKu99b,
  author =       "Franz Baader and Ralf K{\"u}sters",
  title =        "Matching in Description Logics with Existential Restrictions
                  --- {R}evisited",
  institution =  "LuFg Theoretical Computer Science, RWTH Aachen",
  year =         1999,
  number =       "LTCS-Report 99-13",
  address =      "Germany",
}

@InProceedings{BaKu00,
  author =       "Franz Baader and Ralf K{\"u}sters",
  title =        "Matching in Description Logics with Existential
                  Restrictions",
  booktitle =    KR-00,
  pages =        "261--272",
  year =         2000,
}

@Article{BKBM99,
  author =       "Franz Baader and Ralf K{\"u}sters and Alex Borgida and
                  Deborah L. McGuinness",
  title =        "Matching in Description Logics",
  journal =      JLC,
  year =         1999,
  volume =       9,
  number =       3,
  pages =        "411--447"
}

@InProceedings{BaKM98,
  author =       "Franz Baader and Ralf K{\"u}sters and Ralf Molitor",
  title =        "Structural Subsumption Considered from an Automata Theoretic
                  Point of View",
  booktitle =    DL-98,
  year =         1998,
  publisher =    "CEUR Electronic Workshop Proceedings,
                  http://ceur-ws.org/Vol-11/",
}

@InProceedings{BaKM99,
  author =       "Franz Baader and Ralf K{\"u}sters and Ralf Molitor",
  title =        "Computing Least Common Subsumers in Description Logics with
                  Existential Restrictions",
  booktitle =    IJCAI-99,
  pages =        "96--101",
  year =         1999,
}

@InProceedings{BaKM00,
  author =       "Franz Baader and Ralf K{\"u}sters and Ralf Molitor",
  title =        "Rewriting Concepts Using Terminologies",
  booktitle =    KR-00,
  pages =        "297--308",
  year =         2000,
}

@InProceedings{BaLa95,
  author =       "Franz Baader and Armin Laux",
  title =        "Terminological Logics with Modal Operators",
  pages =        "808--814",
  booktitle =    IJCAI-95,
  year =         1995,
  address =      "Montreal, Canada",
  publisher =    MK,
}

@InProceedings{BaMo99,
  author =       "Franz Baader and Ralf Molitor",
  title =        "Rewriting in Description Logics Using Terminologies",
  booktitle =    DL-99,
  year =         1999,
  publisher =    "CEUR Electronic Workshop Proceedings,
                  http://ceur-ws.org/Vol-22/",
}

@TechReport{BaMT98,
  author =       "Franz Baader and Ralf Molitor and Stephan Tobies",
  title =        "On the Relation between Descripion Logics and Conceptual
                  Graphs",
  institution =  "LuFG Theoretical Computer Science, RWTH Aachen, Germany",
  type =         "LTCS-Report",
  number =       "98-11",
  year =         1998,
}

@InProceedings{BaMT99,
  author =       "Franz Baader and Ralf Molitor and Stephan Tobies",
  title =        "Decidable and Tractable Fragments of Conceptual Graphs",
  booktitle =    ICCS-99,
  pages =        "480--493",
  year =         1999,
  editor =       "William Tepfenhart and Walling Cyre",
  series =       LNAI,
  volume =       1640,
  publisher =    SV
}

@InProceedings{BaNa97,
  author =       "Franz Baader and Paliath Narendran",
  title =        "Unification of Concept Terms in Description Logics",
  booktitle =    DL-97,
  year =         1997,
  pages =        "34--38"
}

@InProceedings{BaNa98,
  author =       "Franz Baader and Paliath Narendran",
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  booktitle =    ECAI-98,
  editor =       "H. Prade",
  year =         1998,
  pages =        "331--335",
  publisher =    JWS,
}

@InProceedings{BaNu92,
  author =       "Franz Baader and Werner Nutt",
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@InProceedings{BaOh93,
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  booktitle =    IJCAI-93,
  year =         1993,
  pages =        "690--695",
}

@Article{BaOh95,
  author =       "Franz Baader and Hans-J{\"u}rgen Ohlbach",
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@InProceedings{BaSa96,
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  booktitle =    KR-96,
  year =         1996,
  pages =        "328--338"
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@InProceedings{BaSa96b,
  author =       "Franz Baader and Ulrike Sattler",
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  booktitle =    ECAI-96,
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  publisher =    JWS,
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@Article{BaSa99,
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@InProceedings{BaSa00,
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  year =         2000,
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  publisher =    SV,
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@InProceedings{BLSW00,
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%% BlRV00 has been removed
@Book{BlRV01,
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@Article{BlSe95,
  author =       "Patrick Blackburn and Jerry Seligman",
  title =        "Hybrid Languages",
  journal =      JLLI,
  volume =       4,
  pages =        "251--272",
  year =         1995,
} 

@Article{BlSp93,
  author =       "Patrick Blackburn and Edith Spaan",
  title =        "A modal Perspective on Computational Complexity of Attribute
                  Value Grammars",
  journal =      JLLI,
  volume =       2,
  pages =        "129--169",
  year =         1993,
}

@Article{BlIG94,
  author =       "Jose L. Blanco and Arantza Illarramendi and
                  Alfredo Go{\~n}i",
  title =        "Building a Federated Relational Database System:
                  {A}n Approach Using a Knowledge-Based System",
  journal =      JICIS,
  year =         1994,
  volume =       3,
  number =       4,
  pages =        "415--455"
}

@Book{BlHR90,
  editor =       "K. H. Bl{\"a}sius and U. Hedst{\"u}ck and C.-R. Rollinger",
  title =        "Sorts and Types in Artificial Intelligence",
  publisher =    SV,
  series =       LNAI,
  volume =       418,
  year =         1990,
}

@InProceedings{BoWe80,
  author =       "R. Bobrow and B. Webber",
  title =        "Knowledge Representation for Syntactic/Semantic Processing",
  booktitle =    AAAI-80,
  year =         1980,
}

@Article{BoWi77,
  author =       "Daniel G. Bobrow and Terry Winograd",
  title =        "An Overview of {KRL}, a {K}nowledge {R}epresentation
                  {L}anguage",
  journal =      CogSci,
  year =         1977,
  volume =       1,
  number =       1,
  pages =        "3--46",
  note =         "Republished in \cite{BrLe85}"
}

@Article{BoSa99,
  author =       "Luca Boldrin and Alessandro Saffiotti",
  title =        "A Modal Logic for Fusing Partial Belief of Multiple
                  Reasoners",
  journal =      JLC,
  volume =       9,
  number =       1,
  year =         1999,
}

@Book{BoRJ98,
  author =       "Grady Booch and James Rumbaugh and Ivar Jacobson",
  title =        "The {U}nified {M}odeling {L}anguage User Guide",
  publisher =    AW,
  year =         1998,
}

@Article{Boon59,
  author =       "William W. Boone",
  title =        "The Word Problem",
  journal =      AM,
  year =         1959,
  volume =       2,
  number =       70,
  pages =        "207--265"
}

@Book{BoGG97,
  author =       "Egon B{\"o}rger and Erich Gr{\"a}edel and Yuri Gurevich",
  title =        "The Classical Decision Problem",
  publisher =    SV,
  year =         1997,
  series =       "Perspectives in Mathematical Logic",
}

@Article{Borg92,
  author =       "Alexander Borgida",
  title =        "From Type Systems to Knowledge Representation: {N}atural
                  Semantics Specifications for Description Logics",
  journal =      JICIS,
  volume =       1,
  number =       1,
  pages =        "93--126",
  year =         1992,
}

@TechReport{Borg92b,
  author =       "Alexander Borgida",
  title =        "On the Relationship between Description Logics and
                  Predicate Logic Queries",
  institution =  "Rutgers University",
  address =      "New Brunswick (NJ, USA)",
  number =       "LCSR-TR-295-A",
  year =         1992,
}

@TechReport{Borg92c,
  author =       "Alexander Borgida",
  title =        "Description Logics are not just for the Flightless-Birds: {A}
                  New Look at the Utility and Foundations of Description
                  Logics",
  institution =  "New Brunswick Department of Computer Science, Rutgers
                  University",
  year =         1992,
  number =       "DCS-TR-295",
}

@Article{Borg95,
  author =       "Alexander Borgida",
  title =        "Description Logics in Data Management",
  journal =      TKDE,
  year =         1995,
  volume =       7,
  number =       5,
  pages =        "671--682",
}

@Article{Borg96,
  author =       "Alexander Borgida",
  title =        "On the Relative Expressiveness of Description Logics and
                  Predicate Logics",
  journal =      AIJ,
  year =         1996,
  volume =       82,
  number =       "1--2",
  pages =        "353--367",
}

@InProceedings{BoBr93,
  author =       "Alexander Borgida and Ronald J. Brachman",
  title =        "Loading Data into Description Reasoners",
  booktitle =    SIGMOD,
  year =         1993,
  pages =        "217--226",
}

%% was BBMA89
@InProceedings{BBMR89,
  author =       "Alexander Borgida and Ronald J. Brachman and Deborah
                 L. McGuinness and Lori Alperin Resnick",
  title =        "{CLASSIC}: {A} Structural Data Model for Objects",
  booktitle =    SIGMOD,
  year =         1989,
  pages =        "59--67",
}

@InProceedings{BoEt89,
  author =       "Alexander Borgida and Dawid W. Etherington",
  title =        "Hierarchical Knowledge Bases and Efficient Disjunctive
                  Reasoning",
  booktitle =    KR-89,
  editor =       "Ron J. Brachman and Hector J. Levesque and Ray Reiter",
  pages =        "33--43",
  year =         1989,
}

@InProceedings{BFHMP99,
  title =        "Explaining {$\mathcal{ALC}$} Subsumption",
  author =       "Alex Borgida and Enrico Franconi and Ian Horrocks and Deborah
                  L. McGuinness and Patel-Schneider, Peter F.",
  booktitle =    DL-99,
  year =         1999,
  publisher =    "CEUR Electronic Workshop Proceedings,
                  http://ceur-ws.org/Vol-22/",
}

@InProceedings{BoIM96,
  author =       "Alex Borgida and Charles Isbell and Deborah L. McGuinness",
  title =        "Reasoning with Black Boxes: {H}andling Test Concepts in
                  {CLASSIC}",
  booktitle =    DL-96,
  series =       "AAAI Technical Report",
  number =       "WS-96-05",
  publisher =    AAAIP,
  year =         1996,
}

@TechReport{BoKu99,
  author =       "Alexander Borgida and Ralf K{\"u}sters",
  title =        "What's Not in a Name? {I}nitial Explorations of a Structural
                  Approach to Integrating Large Concept Knowledge-Bases",
  institution =  "Rutgers University",
  year =         1999,
  number =       "DCS-TR-391 ",
}

@InProceedings{BoMc96,
  author =       "Alexander Borgida and Deborah L. McGuinness",
  title =        "Asking Queries about Frames",
  booktitle =    KR-96,
  year =         1996,
  pages =        "340--349",
}

@Article{BoPa94,
  author =       "Alexander Borgida and Patel-Schneider, Peter F.",
  title =        "A Semantics and Complete Algorithm for Subsumption in
                 the {CLASSIC} Description Logic",
  year =         1994,
  journal =      JAIR,
  volume =       1,
  pages =        "277--308",
  publisher =    MK
}

@InProceedings{BoWe97,
  author =       "Alexander Borgida and Grant E. Weddell",
  title =        "Adding Uniqueness Constraints to Description Logics
                  (Preliminary Report)",
  booktitle =    DOOD-97,
  year =         1997,
  pages =        "85--102",
}

@InProceedings{BoCo90,
  author =       "Mokrane Bouzeghoub and Isabelle Comyn-Wattiau",
  title =        "View Integration by Semantic Unification and Transformation
                  of Data Structures",
  booktitle =    ER-90,
  year =         1990,
  pages =        "413--430"
}

@InCollection{BFGM99,
  author =       "Mokrane Bouzeghoub and Francoise Fabret and Helena
                  Galhardas and Maja Matulovic-Broqu\'e  and Joao Pereira and
                  Eric Simon",
  title =        "Data Warehouse Refreshment",
  booktitle =    "Fundamentals of Data Warehouses",
  year =         1999,
  pages =        "47--86",
  editor =       "Matthias Jarke and Maurizio Lenzerini and Yannis Vassiliou
                  and Panos Vassiliadis",
  publisher =    SV,
}

@Book{BoCr91,
  author =       "Daniel Pierre Bovet and Pierluigi Crescenzi",
  title =        "Teoria della Complessit\`a Computazionale",
  publisher =    FA,
  year =         1991,
  note =         "In Italian"
}

@Article{Brac77,
  author =       "Ronald J. Brachman",
  title =        "What's in a Concept: {S}tructural Foundations for Semantic
                  Networks",
  year =         1977,
  journal =      "Int.\ Journal of Man-Machine Studies",
  volume =       9,
  number =       2,
  pages =        "127--152",
}

@InCollection{Brac78,
  author =       "Ronald J. Brachman",
  title =        "Structured Inheritance Networks",
  booktitle =    "Research in Natural Language Understanding",
  publisher =    "Bolt, Beranek and Newman Inc.",
  series =       "Quarterly Progress Report No. 1, BBN Report No. 3742",
  editor =       "W. A. Woods and R. J. Brachman",
  year =         1978,
  pages =        "36--78",
  address =      "Cambridge, Mass.",
}

@InCollection{Brac79,
  author =       "Ronald J. Brachman",
  title =        "On the Epistemological Status of Semantic Networks",
  booktitle =    "Associative Networks",
  year =         1979,
  pages =        "3--50",
  editor =       "Nicholas V. Findler",
  publisher =    AP,
  note =         "Republished in \cite{BrLe85}"
}

@TechReport{BBCK*79,
  author =       "R. Brachman and R. Bobrow and P. Cohen and J. Klovstad and
                  B. Webber and W. Woods",
  title =        "Research in Natural Language Understanding, Annual Report",
  institution =  "Bolt Beranek and Newman",
  year =         1979,
  number =       4274,
  address =      "Cambridge, MA (USA)",
}

%% BBMA89b
@Misc{BBMR89b,
  author =       "Ronald J. Brachman and Alexander Borgida and Deborah
                 L. McGuinness and Lori Alperin Resnick",
  title =        "The {CLASSIC} Knowledge Representation System, or,
                 {KL-ONE}: the Next Generation",
  year =         1989,
  howpublished = "Preprints of the Workshop on Formal Aspects of
                 Semantic Networks, Two Harbors, Cal.",
}

@Article{BDSB*90,
  author =       "Ronald J. Brachman and Premkumar Devanbu and Peter
                  G. Selfridge and David Belanger and Yun Chen",
  title =        "Toward a Software Information System",
  journal =      ATTech,
  volume =       69,
  number =       2,
  pages =        "22--41",
  year =         1990,
}

@Article{BrFL83,
  author =       "Ronald J. Brachman and Richard E. Fikes and Hector
                  J. Levesque",
  title =        "{KRYPTON}: {A} Functional Approach to Knowledge
                  Representation",
  journal =      COMPUTER,
  volume =       oct,
  pages =        "67--73",
  year =         1983,
}

%% was BMPAB91
@InCollection{BMPRB91,
  author =       "Ronald J. Brachman and Deborah L. McGuinness and
                  Patel-Schneider, Peter F. and Lori Alperin Resnick and
                  Alexander Borgida",
  title =        "Living with {CLASSIC}: When and how to Use a {KL-ONE}-like
                  Language",
  booktitle =    "Principles of Semantic Networks",
  year =         1991,
  pages =        "401--456",
  editor =       "John F. Sowa",
  publisher =    MK,
}

@InProceedings{BrLe84,
  author =       "Ronald J. Brachman and Hector J. Levesque",
  title =        "The Tractability of Subsumption in Frame-Based
                 Description Languages",
  booktitle =    AAAI-84,
  year =         1984,
  pages =        "34--37",
}

@InProceedings{BrPL85,
  author =       "Ronald J. Brachman and Pigman Gilbert, Victoria and
                 Hector J. Levesque",
  title =        "An Essential Hybrid Reasoning System: Knowledge and
                 Symbol Level Accounts in {KRYPTON}",
  booktitle =    IJCAI-85,
  year =         1985,
  pages =        "532--539",
}

@Article{BrSc85,
  author =       "Ronald J. Brachman and James G. Schmolze",
  title =        "An Overview of the {KL-ONE} Knowledge Representation
                 System",
  journal =      CogSci,
  year =         1985,
  pages =        "171--216",
  volume =       9,
  number =       2,
}

@Article{Brac85,
  author =       "Ronald J. Brachman",
  title =        "``{I} Lied about the Trees''",
  journal =      AIM,
  year =         1985,
  pages =        "80--93",
  volume =       6,
  number =       3,
}

@InProceedings{Brac92,
  author =       "Ronald J. Brachman",
  title =        "``Reducing'' {CLASSIC} to Practice: Knowledge
                 Representation Meets Reality",
  booktitle =    KR-92,
  publisher =    MK,
  year =         1992,
  pages =        "247--258",
}

%% was BSTAB92
@InProceedings{BSTA*92,
  author =       "Ronald J. Brachman and Peter G. Selfridge and Loren G.
                 Terveen and B. Altman and Alexander Borgida and F. Halper
                 and Thomas Kirk and A. Lazar and Deborah L. McGuinness and
                 Lori Alperin Resnick",
  title =        "Knowledge Representation Support for Data Archeology",
  booktitle =    CIKM-92,
  year =         1992,
  pages =        "457--464",
  editor =       "Y. Yesha",
}

@Article{BSTA*93,
  author =       "Ronald J. Brachman and Peter G. Selfridge and Loren
                  G. Terveen and B. Altman and F. Halper and Thomas Kirk and
                  A. Lazar and Deborah L. McGuinness and Lori Alperin Resnick",
  title =        "Integrated Support for Data Archeology",
  journal =      IJCIS,
  year =         1993,
  volume =       2,
  number =       2,
  pages =        "159--185",
}

@TechReport{BrPS98,
  title =        "Extensible {M}arkup {L}anguage {(XML)} 1.0 --- {W3C}
                  Recommendation",
  author =       "Tim Bray and Jean Paoli and C. M. Sperberg-McQueen",
  institution =  "World Wide Web Consortium",
  year =         1998,
  note =         "Available at http://www.w3.org/TR/1998/REC-xml-19980210"
}

@InProceedings{BrFT95,
  author =       "P. Bresciani and  E. Franconi and S. Tessaris",
  title =        "Implementing and Testing Expressive Description
                  Logics: Preliminary Report",
  booktitle =    DL-95,
  year =         1995,
  pages =        "131--139"
}

@Article{BrHP92,
  author =       "M. W. Bright and A. R. Hurson and S. H. Pakzad",
  title =        "A Taxonomy and Current Issues in Multidatabase Systems",
  journal =      "COMPUTER",
  year =         1992,
  month =        mar,
  pages =        "50--60"
}

@Article{BrHe97,
  author =       "Nieves R. Brisaboa and H{\'e}ctor J. Hern{\'a}ndez",
  title =        "Testing Bag-Containment of Conjunctive Queries",
  journal =      AI,
  year =         1997,
  volume =       34,
  number =       7,
  pages =        "557--578"
}

@Article{BrCe92,
  author =       "M. L. Brodie and S. Ceri",
  title =        "On Intelligent and Cooperative Information Systems:
                  A Workshop Summary",
  journal =      JICIS,
  year =         1992,
  volume =       1,
  number =       2,
  pages =        "249--289"
}

@InProceedings{BKFH00,
  author =       "Jeen Broekstra and Michel Klein and Dieter Fensel and Ian
                  Horrocks",
  title =        "Adding Formal Semantics to the {W}eb: building on Top of
                  {RDF} {S}chema",
  booktitle =    "Proc.\ of the ECDL~2000 Workshop on the Semantic Web",
  year =         2000,
}

@Article{BrLe80,
  author =       "J. A. Brzozowski and E. Leiss",
  title =        "Finite Automata and Sequential Networks",
  journal =      TCS,
  volume =       10,
  pages =        "19--35",
  year =         1980,
}

@InProceedings{BDNS94,
  author =       "Martin Buchheit and Francesco M. Donini and Werner
                  Nutt and Andrea Schaerf",
  title =        "Terminological Systems Revisited: Terminology = Schema +
                  Views",
  year =         1994,
  booktitle =    AAAI-94,
  pages =        "199--204",
  address =      "Seattle (USA)",
}

@TechReport{BDNS95,
  author =       "Martin Buchheit and Francesco M. Donini and Werner
                  Nutt and Andrea Schaerf",
  title =        "A Refined Architecture for Terminological Systems:
                  Terminology = Schema + Views",
  year =         1995,
  institution =  DFKI,
  number =       "RR-95-09",
}

@Article{BDNS98,
  author =       "Martin Buchheit and Francesco M. Donini and Werner
                  Nutt and Andrea Schaerf",
  title =        "A Refined Architecture for Terminological Systems:
                  {T}erminology = Schema + Views",
  journal =      AIJ,
  volume =       99,
  number =       2,
  year =         1998,
  pages =        "209--260",
}

@InProceedings{BuDS93,
  author =       "Martin Buchheit and Francesco M. Donini and Andrea
                 Schaerf",
  title =        "Decidable Reasoning in Terminological Knowledge
                 Representation Systems",
  booktitle =    IJCAI-93,
  year =         1993,
  publisher =    MK,
  pages =        "704--709",
}

@TechReport{BuDS93b,
  author =       "Martin Buchheit and Francesco M. Donini and Andrea
                 Schaerf",
  title =        "Decidable Reasoning in Terminological Knowledge
                 Representation Systems",
  institution =  DFKI,
  year =         1993,
  number =       "RR-93-10",
  address =      "Saarbr{\"u}cken (Germany)",
  note =         "An abridged version appeared in \begingroup\em " # IJCAI-93
                 # "\endgroup"
}

@Article{BuDS93c,
  author =       "Martin Buchheit and Francesco M. Donini and Andrea
                 Schaerf",
  title =        "Decidable Reasoning in Terminological Knowledge
                 Representation Systems",
  year =         1993,
  journal =      JAIR,
  volume =       1,
  pages =        "109--138",
  publisher =    MK,
}

@TechReport{BJNS93,
  author =       "Martin Buchheit and Manfred A. Jeusfeld and Werner
                 Nutt and Martin Staudt",
  title =        "Subsumption between Queries to Object-Oriented
                 Databases",
  institution =  DFKI,
  year =         1993,
  number =       "RR-93-44",
  address =      "Saarbr{\"u}cken (Germany)",
}

@Article{BJNS94,
  author =       "Martin Buchheit and Manfred A. Jeusfeld and Werner
                 Nutt and Martin Staudt",
  title =        "Subsumption between Queries to Object-Oriented
                 Databases",
  year =         1994,
  journal =      IS,
  volume =       19,
  number =       1,
  pages =        "33--54",
  note =         "Special issue on Extending Database Technology, EDBT'94"
}

@InProceedings{BuKN94,
  author =       "Martin Buchheit and Rudiger Klein and Werner Nutt",
  title =        "Configuration as Model Construction: the Constructive Problem
                  Solving Approach",
  booktitle =    "Proc.\ of the 4th Int.\ Conf.\ on Artificial Intelligence in
                  Design",
  address =      "Lausanne (Switzerland)",
  month =        aug,
  year =         1994,
}

@InProceedings{Buch60,
  author =       "J. Richard B{\"u}chi",
  title =        "On a Decision Method in Restricted Second Order Arithmetic",
  booktitle =    "Proc.\ Internat.\ Congr.\ on Logic, Methodology and
                  Philosophy of Science",
  year =         1960,
  publisher =    "Stanford University Press",
  editor =       "E. Nagel and others",
  pages =        "1--11"
}

@Article{Bull70,
  author =       "R. Bull",
  title =        "An Approach to Tense Logic",
  journal =      "Theoria",
  volume =       12,
  pages =        "171--182",
  year =         1970,
} 

@InProceedings{Bune97,
  author =       "Peter Buneman",
  title =        "Semistructured Data",
  booktitle =    PODS-97,
  year =         1997,
  pages =        "117--121"
}

@InProceedings{BDFS97,
  author =       "Peter Buneman and Susan Davidson and Mary F. Fernandez and
                  Dan Suciu",
  title =        "Adding Structure to Unstructured Data",
  booktitle =    ICDT-97,
  year =         1997,
  pages =        "336--350"
}

@InProceedings{BDHS96,
  author =       "Peter Buneman and Susan Davidson and Gerd Hillebrand and
                  Dan Suciu",
  title =        "A Query Language and Optimization Technique for Unstructured
                  Data",
  booktitle =    SIGMOD,
  year =         1996,
  pages =        "505--516"
}

@InProceedings{BuDK92,
  author =       "P. Buneman and S. Davidson and A. Kosky",
  title =        "Theoretical Aspects of Schema Merging",
  booktitle =    EDBT-92,
  series =       LNCS,
  year =         1992,
  publisher =    SV,
  pages =        "152--167"
}

@InProceedings{BuFW98,
  author =       "Peter Buneman and Wenfei Fan and Scott Weinstein",
  title =        "Path Constraints on Semistructured and Structured Data",
  booktitle =    PODS-98,
  year =         1998,
  pages =        "129--138",
}

@InProceedings{BuFW99,
  author =       "Peter Buneman and Wenfei Fan and Scott Weinstein",
  title =        "Interaction between Path and Type Constraints",
  booktitle =    PODS-99,
  year =         1999,
  pages =        "56--67",
}

@InProceedings{BMSSS95,
  author =       "P. Buongarzoni and C. Menghini and R. Salis and F. Sebastiani
                  and U. Straccia",
  title =        "Logical and Computational Properties of the Description Logic
                  {\sc MIRTL}",
  booktitle =    DL-95,
  year =         1995,
  pages =        "80--84",
}

@Article{BCMDH92,
  author =       "J. R. Burch and E. M. Clarke and K. L. McMillan and
                  D. L. Dill and L. J. Hwang",
  title =        "Symbolic Model Checking: $10^{20}$ States and Beyond",
  journal =      ICOMP,
  volume =       98,
  number =       2,
  year =         1992,
  pages =        "142--170",
}

@InProceedings{Burk90,
  author =       "Hans-J{\"u}rgen B{\"u}rckert",
  title =        "A Resolution Principle for Clauses with Constraints",
  booktitle =    CADE-90,
  year =         1990,
  publisher =    SV,
  pages =        "178--192",
  series =       LNAI,
  volume =       449,
}

@Article{Burk94,
  author =       "Hans-J{\"u}rgen B{\"u}rckert",
  title =        "A Resolution Principle for Constrainted Logics",
  journal =      AIJ,
  volume =       66,
  pages =        "235--271",
  number =       2,
  year =         1994,
}

@Article{Byla91,
  author =       "Tom Bylander",
  title =        "Tractability and Artificial Intelligence",
  journal =      JETAI,
  volume =       3,
  year =         1991,
  pages =        "171--178",
}

%ccccccccccccccccccccccccc
%ccccccccccccccccccccccccc

@InProceedings{CaDS90,
  author =       "Marco Cadoli and Francesco M. Donini and Marco Schaerf",
  title =        "Closed World Reasoning in Hybrid Systems",
  booktitle =    ISMIS-90,
  year =         1990,
  publisher =    NH,
  pages =        "474--481",
  editor =       "Zbigniew W. Ras and Maria Zemankova and Mary L. Emrich",
}

@InProceedings{CaLe90,
  author =       "Marco Cadoli and Maurizio Lenzerini",
  title =        "The Complexity of Closed World Reasoning and
                  Circumscription",
  booktitle =    AAAI-90,
  year =         1990,
  publisher =    MIT,
  pages =        "550--555",
}

@InProceedings{CLNP90,
  author =       "Marco Cadoli and Maurizio Lenzerini and Daniele Nardi and
                  Fiora Pirri",
  title =        "Circumscription and Nonmonotonic Inheritance",
  booktitle =    PRICAI-90,
  year =         1990,
  publisher =    "Ohmsha, Ltd.",
  pages =        "760--765",
  address =      "Tokyo (Japan)",
}

@InProceedings{CaLP96,
  author =       "Cadoli, Marco and Palopoli, Luigi and Lenzerini, Maurizio",
  title =        "Datalog and Description Logics: {E}xpressive
                  Power. {P}reliminary report",
  booktitle =    DL-96,
  series =       "AAAI Technical Report",
  number =       "WS-96-05",
  publisher =    AAAIP,
  year =         1996,
}

@InProceedings{CaLP97,
  author =       "Cadoli, Marco and Palopoli, Luigi and Lenzerini, Maurizio",
  booktitle =    DBPL-97,
  title =        "Datalog and Description Logics: {E}xpressive Power",
  year =         1997,
}

@Article{CaSc93,
  author =       "Marco Cadoli and Marco Schaerf",
  title =        "A Survey of Complexity Results for Non-monotonic Logics",
  journal =      JLP,
  volume =       17,
  pages =        "127--160",
  year =         1993,
}

@TechReport{CSGG99,
  author =       "Marco Cadoli and Schaerf Marco and A. Giovanardi and
                  M. Giovanardi",
  institution =  DIS,
  number =       "08-99",
  title =        "An Algorithm to Evaluate Quantified Boolean Formulae and its
                  Experimental Evaluation",
  year =         1999,
  note =         "Accepted for publication on {\em Journal of Automated
                  Reasoning}, special issue {\em SAT-2000}",
}

@MastersThesis{Cali99,
  author =       "Andrea Cal{\`\i}",
  title =        "Modellazione di Dati Semistrutturati",
  school =       "University of Rome ``La Sapienza''",
  year =         1999,
}

@InProceedings{CCDL01,
  author =       "Andrea Cal{\`\i} and Diego Calvanese and De Giacomo, Giuseppe
                  and Maurizio Lenzerini",
  title =        "Reasoning on {UML} Class Diagrams in Description Logics",
  booktitle =    "Proc.\ of IJCAR Workshop on Precise Modelling and Deduction
                  for Object-oriented Software Development (PMD~2001)",
  year =         2001,
}

%% was IBIS1
@TechReport{CCDL01b,
  author =       "Andrea Cal{\`\i} and Diego Calvanese and De Giacomo, Giuseppe
                  and Maurizio Lenzerini",
  title =        "Formalization of Data Integration in {IBIS}",
  institution =  "Progetto IBIS",
  year =         2001,
  number =       "N.~1",
}

@TechReport{CCDL01c,
  author =       "Andrea Cal{\`\i} and Diego Calvanese and De Giacomo, Giuseppe
                  and Maurizio Lenzerini",
  title =        "Algorithms for query answering in {IBIS}",
  institution =  "Progetto IBIS",
  year =         2001,
  number =       "N.~2",
}

@TechReport{CCDL01d,
  author =       "Andrea Cal{\`\i} and Diego Calvanese and De Giacomo, Giuseppe
                  and Maurizio Lenzerini",
  title =        "Consistency and complexity issues in {IBIS}",
  institution =  "Progetto IBIS",
  year =         2001,
  number =       "N.~3",
}

@InProceedings{CCDL01e,
  author =       "Andrea Cal{\`\i} and Diego Calvanese and De Giacomo, Giuseppe
                  and Maurizio Lenzerini",
  title =        "Accessing Data Integration Systems through Conceptual
                  Schemas",
  booktitle =    ER-01,
  note =         "To appear",
  year =         2001
}

@Unpublished{CCDL01f,
  author =       "Andrea Cal{\`\i} and Diego Calvanese and De Giacomo, Giuseppe
                  and Maurizio Lenzerini",
  title =        "Data Integration under Integrity Constraints",
  nobooktitle =  ICDE-02,
  note =         "Submitted for publication",
  year =         2001
}

@InProceedings{CaCL00b,
  author =       "Andrea Cal{\`\i} and Diego Calvanese and Maurizio Lenzerini",
  title =        "Semistructured Data Schemas with Expressive Constraints",
  booktitle =    KRDB-00,
  year =         2000,
  pages =        "3--16",
  publisher =    "CEUR Electronic Workshop Proceedings,
                  http://ceur-ws.org/Vol-29/",
}

@InProceedings{CaDL01b,
  author =       "Andrea Cal{\`\i} and Giuseppe De Giacomo and Maurizio
                  Lenzerini",
  title =        "Models for Information Integration: {T}urning Local-as-View
                  into Global-as-View",
  booktitle =    "Proc.\ of Int.\ Workshop on Foundations of Models for
                  Information Integration (10th Workshop in the series
                  Foundations of Models and Languages for Data and Objects)",
  year =         2001,
}

@MastersThesis{Calv90,
  author =       "Diego Calvanese",
  title =        "Tesi di Laurea in Ingegneria Informatica",
  school =       "Universit\`a di Roma ``La Sapienza''",
  year =         1990,
}

@InProceedings{Calv93,
  author =       "Diego Calvanese",
  title =        "Finite Satisfiability and Implication in Concept Languages",
  booktitle =    "Proc.\ of the 1st COMPULOG Net Meeting on Knowledge
                  Representation and Reasoning (CNKRR'93)",
  publisher =    "Universidade Nova de Lisboa",
  year =         1993,
}

@PhdThesis{Calv96,
  author =       "Diego Calvanese",
  title =        "Unrestricted and Finite Model Reasoning in Class-Based
                  Representation Formalisms",
  school =       DIS,
  year =         1996,
  note =         "Available at
                  http://www.dis.uniroma1.it/pub/calvanes/thesis.ps.gz",
}

@PhdThesis{Calv96b,
  author =       "Diego Calvanese",
  title =        "Rappresentazione della conoscenza basata su classi:
                  ragionamento in modelli finiti e in modelli arbitrari",
  school =       DIS,
  year =         1996,
  note =         "In Italian",
}

@InProceedings{Calv96c,
  author =       "Diego Calvanese",
  title =        "Reasoning with Inclusion Axioms in Description Logics:
                  Algorithms and Complexity",
  booktitle =    ECAI-96,
  year =         1996,
  pages =        "303--307",
  publisher =    JWS,
}

@InProceedings{Calv96d,
  author =       "Diego Calvanese",
  title =        "Finite Model Reasoning in Description Logics",
  booktitle =    KR-96,
  editor =       "Luigia C. Aiello and John Doyle and Stuart C. Shapiro",
  publisher =    MK,
  year =         1996,
  pages =        "292--303"
}

@InProceedings{CaCS00,
  author =       "Diego Calvanese and Tiziana Catarci and Giuseppe Santucci",
  title =        "Building a Digital Library of Newspaper Clippings:
                  {T}he {LAURIN} Project",
  booktitle =    ADL-00,
  year =         2000,
  pages =        "15--26",
}

@InProceedings{CaDL95,
  author =       "Diego Calvanese and De Giacomo, Giuseppe and
                  Maurizio Lenzerini",
  title =        "Structured Objects: {M}odeling and Reasoning",
  booktitle =    DOOD-95,
  year =         1995,
  series =       LNCS,
  volume =       1013,
  publisher =    SV,
  pages =        "229--246"
}

@InProceedings{CaDL95b,
  author =       "Diego Calvanese and De Giacomo, Giuseppe and
                  Maurizio Lenzerini",
  title =        "Increasing the Power of Structured Objects",
  booktitle =    "{KRDB-95}: {R}easoning about Structured Objects: {K}nowledge
                  Representation meets Databases",
  year =         1995,
  address =      "Bielefeld (Germany)",
}

@InProceedings{CaDL97,
  author =       "Diego Calvanese and De Giacomo, Giuseppe and
                  Maurizio Lenzerini",
  title =        "Representing and Reasoning on {SGML} Documents",
  booktitle =    ISMIS-97,
  series =       LNCS,
  volume =       1325,
  publisher =    SV,
  pages =        "540--549",
  year =         1997,
}

@InProceedings{CaDL97b,
  author =       "Diego Calvanese and De Giacomo, Giuseppe and
                  Maurizio Lenzerini",
  title =        "Conjunctive Query Containment in {D}escription {L}ogics with
                  $n$-ary Relations",
  year =         1997,
  booktitle =    DL-97,
  pages =        "5--9",
}

@InProceedings{CaDL98,
  author =       "Diego Calvanese and De Giacomo, Giuseppe and
                  Maurizio Lenzerini",
  title =        "On the Decidability of Query Containment under Constraints",
  booktitle =    PODS-98,
  year =         1998,
  pages =        "149--158",
}

@InProceedings{CaDL98b,
  author =       "Diego Calvanese and De Giacomo, Giuseppe and
                  Maurizio Lenzerini",
  title =        "What can Knowledge Representation do for Semi-Structured
                  Data?",
  booktitle =    AAAI-98,
  pages =        "205--210",
  year =         1998,
}

@InProceedings{CaDL98c,
  author =       "Diego Calvanese and De Giacomo, Giuseppe and
                  Maurizio Lenzerini",
  title =        "Semi-Structured Data with Constraints and Incomplete
                  Information",
  booktitle =    DL-98,
  year =         1998,
  pages =        "11--20",
  publisher =    "CEUR Electronic Workshop Proceedings,
                  http://ceur-ws.org/Vol-11/",
}

@TechReport{CaDL98e,
  author =       "Diego Calvanese and De Giacomo, Giuseppe and
                  Maurizio Lenzerini",
  title =        "Queries and Constraints on Semi-Structured Data",
  institution =  DIS,
  year =         1998,
  number =       "13-98",
}

@InCollection{CDLN00,
  author =       "Diego Calvanese and De Giacomo, Giuseppe and
                  Maurizio Lenzerini and Daniele Nardi",
  title =        "Reasoning in Expressive Description Logics",
  booktitle =    "Handbook of Automated Reasoning",
  publisher =    ESP,
  year =         2000,
  editor =       "Alan Robinson and Andrei Voronkov",
  note =         "To appear",
}

@TechReport{CDLNR97,
  author =       "Diego Calvanese and De Giacomo, Giuseppe and
                  Maurizio Lenzerini and Daniele Nardi and Riccardo Rosati",
  title =        "Database Integration for Datawarehousing",
  institution =  "DWQ Consortium",
  year =         1997,
  month =        mar,
  number =       "DWQ-UNIROMA-001",
}

@TechReport{CDLNR97b,
  author =       "Diego Calvanese and De Giacomo, Giuseppe  and
                  Maurizio Lenzerini and Daniele Nardi and Riccardo Rosati",
  title =        "Source Integration in Data Warehousing",
  institution =  "DWQ Consortium",
  year =         1997,
  month =        oct,
  number =       "DWQ-UNIROMA-002",
}

@InProceedings{CDLNR98,
  author =       "Diego Calvanese and De Giacomo, Giuseppe and
                  Maurizio Lenzerini and Daniele Nardi and Riccardo Rosati",
  title =        "Description Logic Framework for Information Integration",
  booktitle =    KR-98,
  year =         1998,
  pages =        "2--13"
}

@InProceedings{CDLNR98b,
  author =       "Diego Calvanese and De Giacomo, Giuseppe and
                  Maurizio Lenzerini and Daniele Nardi and Riccardo Rosati",
  title =        "Knowledge Representation Approach to Information
                  Integration",
  booktitle =    "Proc.\ of AAAI Workshop on AI and Information Integration",
  publisher =    AAAIP,
  year =         1998,
  pages =        "58--65",
}

@InProceedings{CDLNR98c,
  author =       "Diego Calvanese and De Giacomo, Giuseppe and
                  Maurizio Lenzerini and Daniele Nardi and Riccardo Rosati",
  title =        "Source Integration in Data Warehousing",
  booktitle =    "Proc.\ of the 9th Int.\ Workshop on Database and Expert
                  Systems Applications (DEXA'98)",
  year =         1998,
  publisher =    IEEEP,
  pages =        "192--197",
}

@InProceedings{CDLNR98d,
  author =       "Diego Calvanese and De Giacomo, Giuseppe and
                  Maurizio Lenzerini and Daniele Nardi and Riccardo Rosati",
  title =        "Information Integration: {C}onceptual Modeling and
                  Reasoning Support",
  booktitle =    CoopIS-98,
  year =         1998,
  pages =        "280--291",
}

@TechReport{CDLNR98e,
  author =       "Diego Calvanese and De Giacomo, Giuseppe  and
                  Maurizio Lenzerini and Daniele Nardi and Riccardo Rosati",
  title =        "Experimentation with the Incremental View Integration",
  institution =  "DWQ Consortium",
  year =         1998,
  month =        sep,
  number =       "DWQ-UNIROMA-003",
}

@TechReport{CDLNR98f,
  author =       "Diego Calvanese and De Giacomo, Giuseppe  and
                  Maurizio Lenzerini and Daniele Nardi and Riccardo Rosati",
  title =        "Schema and Data Integration Methodology for {DWQ}",
  institution =  "DWQ Consortium",
  year =         1998,
  month =        sep,
  number =       "DWQ-UNIROMA-004",
}

@InCollection{CDLNR99,
  author =       "Diego Calvanese and De Giacomo, Giuseppe and Maurizio
                  Lenzerini and Daniele Nardi and Riccardo Rosati",
  title =        "Source Integration",
  booktitle =    "Fundamentals of Data Warehouses",
  editor =       "Matthias Jarke and Maurizio Lenzerini and Yannis Vassiliou
                  and Panos Vassiliadis",
  chapter =      3,
  publisher =    SV,
  year =         1999,
}

@InProceedings{CDLNR99b,
  author =       "Diego Calvanese and De Giacomo, Giuseppe and
                  Maurizio Lenzerini and Daniele Nardi and Riccardo Rosati",
  title =        "A Principled Approach to Data Integration and Reconciliation
                  in Data Warehousing",
  booktitle =    "Proc.\ of the Int.\ Workshop on Design and Management of Data
                  Warehouses (DMDW'99)",
  year =         1999,
  publisher =    "CEUR Electronic Workshop Proceedings,
                  http://ceur-ws.org/Vol-19/",
}

@TechReport{CDLNR99c,
  author =       "Diego Calvanese and De Giacomo, Giuseppe  and
                  Maurizio Lenzerini and Daniele Nardi and Riccardo Rosati",
  title =        "Experimental Prototype Supporting Data Reconciliation",
  institution =  "DWQ Consortium",
  year =         1999,
  month =        oct,
  number =       "DWQ-UNIROMA-006",
}

@TechReport{CDLNR99d,
  author =       "Diego Calvanese and De Giacomo, Giuseppe  and
                  Maurizio Lenzerini and Daniele Nardi and Riccardo Rosati",
  title =        "Use of the Reconciliation Tool at {T}elecom {I}talia",
  institution =  "DWQ Consortium",
  year =         1999,
  month =        oct,
  number =       "DWQ-UNIROMA-007",
}

@Article{CDLNR01,
  author =       "Diego Calvanese and De Giacomo, Giuseppe and Maurizio
                  Lenzerini and Daniele Nardi and Riccardo Rosati",
  title =        "Data Integration in Data Warehousing",
  journal =      IJCIS,
  year =         2001,
  volume =       10,
  number =       3,
  pages =        "237-271",
}

@InProceedings{CaDL99,
  author =       "Diego Calvanese and De Giacomo, Giuseppe and
                  Maurizio Lenzerini",
  title =        "Reasoning in Expressive Description Logics with Fixpoints
                  based on Automata on Infinite Trees",
  booktitle =    IJCAI-99,
  year =         1999,
  pages =        "84--89",
}

@InProceedings{CaDL99b,
  author =       "Diego Calvanese and De Giacomo, Giuseppe and
                  Maurizio Lenzerini",
  title =        "Queries and Constraints on Semi-Structured Data",
  booktitle =    CAiSE-99,
  year =         1999,
  pages =        "434--438",
}

@Article{CaDL99c,
  author =       "Diego Calvanese and De Giacomo, Giuseppe and
                  Maurizio Lenzerini",
  title =        "Representing and Reasoning on {XML} Documents:
                  {A} Description Logic Approach",
  journal =      JLC,
  year =         1999,
  volume =       9,
  number =       3,
  pages =        "295--318",
}

@Article{CaDL99d,
  author =       "Diego Calvanese and De Giacomo, Giuseppe and
                  Maurizio Lenzerini",
  title =        "Modeling and Querying Semi-Structured Data",
  journal =      NISJ,
  volume =       2,
  number =       2,
  year =         1999,
}

@InProceedings{CaDL99e,
  author =       "Diego Calvanese and De Giacomo, Giuseppe and
                  Maurizio Lenzerini",
  title =        "Answering Queries Using Views in Description Logics",
  booktitle =    DL-99,
  year =         1999,
  pages =        "9--13",
  publisher =    "CEUR Electronic Workshop Proceedings,
                  http://ceur-ws.org/Vol-22/",
}

@InProceedings{CaDL00,
  author =       "Diego Calvanese and De Giacomo, Giuseppe and
                  Maurizio Lenzerini",
  title =        "Answering Queries Using Views over Description Logics
                  Knowledge Bases",
  booktitle =    AAAI-00,
  pages =        "386--391",
  year =         2000,
}

@InProceedings{CaDL00b,
  author =       "Diego Calvanese and De Giacomo, Giuseppe and
                  Maurizio Lenzerini",
  title =        "Keys for Free in Description Logics",
  booktitle =    DL-00,
  pages =        "79--88",
  year =         2000,
  publisher =    "CEUR Electronic Workshop Proceedings,
                  http://ceur-ws.org/Vol-33/",
}

@InProceedings{CaDL01,
  author =       "Diego Calvanese and De Giacomo, Giuseppe and
                  Maurizio Lenzerini",
  title =        "Identification Constraints and Functional Dependencies
                  in Description Logics",
  booktitle =    IJCAI-01,
  pages =        "155--160",
  year =         2001
}

@InProceedings{CDLV00e,
  author =       "Diego Calvanese and De Giacomo, Giuseppe and
                  Maurizio Lenzerini and Moshe Y. Vardi",
  title =        "What is Query Rewriting?",
  booktitle =    KRDB-00,
  year =         2000,
  pages =        "17--27",
  publisher =    "CEUR Electronic Workshop Proceedings,
                  http://ceur-ws.org/Vol-29/",
}

@InProceedings{CDLV99,
  author =       "Diego Calvanese and De Giacomo, Giuseppe and
                  Maurizio Lenzerini and Moshe Y. Vardi",
  title =        "Rewriting Regular Expressions in Semi-Structured Data",
  booktitle =    "Proc.\ of ICDT'99 Workshop on Query Processing for
                  Semi-Structured Data and Non-Standard Data Formats",
  year =         1999,
}

@InProceedings{CDLV99b,
  author =       "Diego Calvanese and De Giacomo, Giuseppe and
                  Maurizio Lenzerini and Moshe Y. Vardi",
  title =        "Rewriting of Regular Expressions and Regular Path Queries",
  booktitle =    PODS-99,
  year =         1999,
  pages =        "194--204",
}

@TechReport{CDLV99c,
  author =       "Diego Calvanese and De Giacomo, Giuseppe and
                  Maurizio Lenzerini and Moshe Y. Vardi",
  title =        "Rewriting of Regular Expressions and Regular Path Queries",
  institution =  DIS,
  year =         1999,
  number =       "04-99",
}

@InProceedings{CDLV99d,
  author =       "Diego Calvanese and De Giacomo, Giuseppe and
                  Maurizio Lenzerini and Moshe Vardi",
  title =        "Query Answering Using Views for Data Integration over the
                  Web",
  booktitle =    "Proc.\ of the 2nd Int.\ Workshop on the Web and Databases
                  (WebDB'99)",
  year =         1999,
  pages =        "73--78",
}

@TechReport{CDLV99e,
  author =       "Diego Calvanese and De Giacomo, Giuseppe and
                  Maurizio Lenzerini and Moshe Vardi",
  title =        "Answering Regular Path Queries Using Views",
  institution =  DIS,
  year =         1999,
  number =       "20-99",
}

@InProceedings{CDLV99f,
  author =       "Diego Calvanese and De Giacomo, Giuseppe and
                  Maurizio Lenzerini and Moshe Y. Vardi",
  title =        "Rewriting of Regular Path Queries",
  booktitle =    SEBD-99,
  pages =        "213--224",
  year =         1999,
}

@InProceedings{CDLV00,
  author =       "Diego Calvanese and De Giacomo, Giuseppe and
                  Maurizio Lenzerini and Moshe Y. Vardi",
  title =        "Answering Regular Path Queries Using Views",
  booktitle =    ICDE-00,
  year =         2000,
  pages =        "389--398",
}

@InProceedings{CDLV00b,
  author =       "Diego Calvanese and De Giacomo, Giuseppe and
                  Maurizio Lenzerini and Moshe Y. Vardi",
  title =        "Containment of Conjunctive Regular Path Queries with
                  Inverse",
  booktitle =    KR-00,
  year =         2000,
  pages =        "176--185",
}

@InProceedings{CDLV00c,
  author =       "Diego Calvanese and De Giacomo, Giuseppe and
                  Maurizio Lenzerini and Moshe Y. Vardi",
  title =        "Query Processing using Views for Regular Path Queries with
                  Inverse",
  booktitle =    PODS-00,
  year =         2000,
  pages =        "58--66",
}

@InProceedings{CDLV00d,
  author =       "Diego Calvanese and De Giacomo, Giuseppe and
                  Maurizio Lenzerini and Moshe Y. Vardi",
  title =        "View-based Query Processing and Constraint Satisfaction",
  booktitle =    LICS-00,
  year =         2000,
  pages =        "361--371",
}

@TechReport{CDLV01,
  author =       "Diego Calvanese and De Giacomo, Giuseppe and
                  Maurizio Lenzerini and Moshe Y. Vardi",
  title =        "View-based Query Answering and Query Containment
                  over Semistructured data",
  institution =  "Submitted for publication",
  year =         2001,
}

@InProceedings{CaDR98,
  author =       "Diego Calvanese and De Giacomo, Giuseppe and Riccardo
                  Rosati",
  title =        "A Note on Encoding Inverse Roles and Functional Restrictions
                  in {${\cal ALC}$} Knowledge Bases",
  booktitle =    DL-98,
  year =         1998,
  pages =        "69--71",
  publisher =    "CEUR Electronic Workshop Proceedings,
                  http://ceur-ws.org/Vol-11/",
}

@Article{CaDR99,
  author =       "Diego Calvanese and De Giacomo, Giuseppe and
                  Riccardo Rosati",
  title =        "Data Integration and Reconciliation in Data Warehousing:
                  {C}onceptual Modeling and Reasoning Support",
  journal =      NISJ,
  volume =       2,
  number =       4,
  year =         1999,
}

@InProceedings{CaLe94,
  author =       "Diego Calvanese and Maurizio Lenzerini",
  title =        "On the Interaction between {ISA} and Cardinality
                  Constraints",
  booktitle =    DE-94,
  address =      "Houston (Texas, USA)",
  year =         1994,
  publisher =    IEEEP,
  pages =        "204--213",
}

@InProceedings{CaLe94b,
  author =       "Diego Calvanese and Maurizio Lenzerini",
  title =        "Making Object-Oriented Schemas more Expressive",
  booktitle =    PODS-94,
  pages =        "243-254",
  address =      "Minneapolis (Minnesota, USA)",
  publisher =    ACMP,
  year =         1994,
}

@InProceedings{CaLN94,
  author =       "Diego Calvanese and Maurizio Lenzerini and Daniele Nardi",
  title =        "A Unified Framework for Class Based Representation
                  Formalisms",
  booktitle =    KR-94,
  pages =        "109--120",
  address =      "Bonn (Germany)",
  editor =       "J. Doyle and E. Sandewall and P. Torasso",
  publisher =    MK,
  year =         1994,
}

@InCollection{CaLN98,
  author =       "Diego Calvanese and Maurizio Lenzerini and Daniele Nardi",
  title =        "Description Logics for Conceptual Data Modeling",
  booktitle =    "Logics for Databases and Information Systems",
  publisher =    KAP,
  year =         1998,
  pages =        "229--264",
  editor =       "Jan Chomicki and G{\"u}nter Saake",
}

@Article{CaLN99,
  author =       "Diego Calvanese and Maurizio Lenzerini and Daniele Nardi",
  title =        "Unifying Class-Based Representation Formalisms",
  journal =      JAIR,
  volume =       11,
  year =         1999,
  pages =        "199--240",
}

@Article{CaMi91,
  author =       "Luca Cardelli and John C. Mitchell",
  title =        "Operations on Records",
  journal =      MSCS,
  volume =       1,
  number =       1,
  pages =        "3--48",
  year =         1991,
}

@InProceedings{CHSA95,
  author =       "M. J. Carey and L. M. Haas and P. M. Schwarz and M. Arya and
                  W. F. Cody and R. Fagin and M. Flickner and A. Luniewski and
                  W. Niblack and D. Petkovic and J. Thomas and J. H. Williams
                  and E. L. Wimmers",
  title =        "Towards Heterogeneous Multimedia Information Systems: {T}he
                  {G}arlic Approach",
  booktitle =    "Proc.\ of the 5th Int.\ Workshop on Research Issues in Data
                  Engineering -- Distributed Object Management (RIDE-DOM'95)",
  pages =        "124--131",
  year =         1995,
  publisher =    IEEEP,
}

@Article{CaFP84,
  author =       "M. A. Casanova and R. Fagin and C. H. Papadimitriou",
  title =        "Inclusion Dependencies and their Interaction with Functional
                  Dependencies",
  journal =      JCSS,
  year =         1984,
  volume =       28,
  number =       1,
  pages =        "29--59",
}

@InProceedings{CaTF88,
  author =       "Marco A. Casanova and Luiz Tucherman and Antonio L. Furtado",
  title =        "Enforcing Inclusion Dependencies and Referencial Integrity",
  booktitle =    VLDB-88,
  year =         1988,
  pages =        "38--49",
}

@InProceedings{CTFB89,
  author =       "Marco A. Casanova and Luiz Tucherman and Antonio L. Furtado
                  and Anelise P. Braga",
  title =        "Optimization of Relational Schemas Containing Inclusion
                  Dependencies",
  booktitle =    VLDB-89,
  year =         1989,
  pages =        "317--325",
}

@Article{CaDL95c,
  author =       "Tiziana Catarci and D'Angiolini, Giovanna and Maurizio
                  Lenzerini",
  title =        "Conceptual Language for Statistical Data Modeling",
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%ddddddddddddddddddddddddd
%ddddddddddddddddddddddddd

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  booktitle =    "Proc.\ of the AAAI'96 Workshop on Reasoning about Actions,
                  Planning and Control: Bridging the Gap",
  year =         1996,
  address =      "Portland (USA)"
}

@InProceedings{DINR97,
  author =       "De Giacomo, Giuseppe and Luca Iocchi and Daniele Nardi and
                  Riccardo Rosati",
  title =        "Planning with Sensing for a Mobile Robot",
  booktitle =    ECP-97,
  publisher =    SV,
  series =       LNAI,
  number =       1348,
  pages =        "156--168",
  year =         1997,
}

@Article{DINR99,
  author =       "De Giacomo, Giuseppe and Iocchi, Luca and Nardi, Daniele and
                  Rosati, Riccardo",
  title =        "A Theory and Implementation of Cognitive Mobile Robots",
  journal =      JLC,
  year =         1999,
  volume =       9,
  number =       5,
  pages =        "759--785",
}

@Unpublished{DeLe93,
  author =       "De Giacomo, Giuseppe and Lenzerini, Maurizio",
  title =        "A Uniform Framework for Concept Definitions",
  month =        jul,
  year =         1993,
  note =         "Unpublished manuscript"
}

@InProceedings{DeLe94,
  author =       "De Giacomo, Giuseppe and Maurizio Lenzerini",
  title =        "Boosting the Correspondence between Description Logics and
                  Propositional Dynamic Logics",
  booktitle =    AAAI-94,
  publisher =    AAAIP,
  pages =        "205--212", 
  year =         1994
}

@InProceedings{DeLe94b,
  author =       "De Giacomo, Giuseppe and Maurizio Lenzerini",
  title =        "Concept Language with Number Restrictions and Fixpoints,
                  and its Relationship with $\mu$-Calculus",
  booktitle =    ECAI-94,
  pages =        "411--415", 
  year =         1994
}

@InProceedings{DeLe94c,
  author =       "De Giacomo, Giuseppe and Maurizio Lenzerini",
  title =        "Description Logics with Inverse Roles, Functional
                  Restrictions, and n-ary Relations",
  booktitle =    JELIA-94,
  publisher =    SV,
  series =       LNAI,
  volume =       838,
  pages =        "332--346", 
  year =         1994
}

@TechReport{DeLe94d,
  author =       "De Giacomo, Giuseppe and Maurizio Lenzerini",
  title =        "Converse, Local Determinism, and Graded Nondeterminism in
                  Propositional Dynamic Logics",
  institution =  DIS,
  number =       "11-94",
  month =        jun,
  year =         1994
}

@InProceedings{DeLe94e,
  author =       "De Giacomo, Giuseppe and Lenzerini, Maurizio",
  Title =        "On The Correspondence between Description Logics and
                  Logics of Programs (Position Paper)",
  booktitle =    "Proc.\ of the Description Logics Workshop",
  pages =        "1--4", 
  year =         1994
}

@InProceedings{DeLe95,
  author =       "De Giacomo, Giuseppe and Maurizio Lenzerini",
  title =        "Enhanced Propositional Dynamic Logic for Reasoning about
                  Concurrent Actions (extended abstract)",
  booktitle =    "Working Notes of the AAAI 1995 Spring Symposium on
                  Extending Theories of Action: {F}ormal and Practical
                  Applications",
  year =         1995,
  pages =        "62--67"
}

@InProceedings{DeLe95b,
  author =       "De Giacomo, Giuseppe and Maurizio Lenzerini",
  title =        "What's in an Aggregate: {F}oundations for Description Logics
                  with Tuples and Sets",
  booktitle =    IJCAI-95,
  pages =        "801--807",
  year =         1995,
}
                  
@InProceedings{DeLe95c,
  author =       "De Giacomo, Giuseppe and Maurizio Lenzerini",
  title =        "{PDL}-Based Framework for Reasoning about Actions",
  booktitle =    AI*IA-95,
  publisher =    SV,
  volume =       992,
  series =       LNAI,
  pages =        "103--114",
  year =         1995,
}                 

@InProceedings{DeLe96,
  author =       "De Giacomo, Giuseppe and Maurizio Lenzerini",
  title =        "{TBox} and {ABox} Reasoning in Expressive Description
                  Logics",
  booktitle =    KR-96,
  editor =       "Luigia C. Aiello and John Doyle and Stuart C. Shapiro",
  publisher =    MK,
  year =         1996,
  pages =        "316--327"
}

@Article{DeLe97,
  author =       "De Giacomo, Giuseppe and Maurizio Lenzerini",
  title =        "A Uniform Framework for Concept Definitions in Description
                  Logics",
  journal =      JAIR,
  year =         1997,
  volume =       6,
  pages =        "87--110"
}

@InProceedings{DeMa96,
  author =       "De Giacomo, Giuseppe and Fabio Massacci",
  title =        "Tableaux and Algorithms for Propositional Dynamic Logic
                  with Converse",
  booktitle =    CADE-96,
  editor =       "Michael A. McRobbie and John K. Slaney",
  pages =        "613-628",
  publisher =    SV,
  series =       LNAI,
  volume =       1104,
  year =         1996,
}

@Article{DeMa00,
  author =       "De Giacomo, Giuseppe and Fabio Massacci",
  title =        "Combining Deduction and Model Checking into Tableaux and
                  Algorithms for Converse-PDL",
  journal =      ICOMP,
  year =         2000,
  volume =       160,
  number =       "1--2",
}

@InProceedings{DeNa96,
  author =       "De Giacomo, Giuseppe and Paolo Naggar",
  booktitle =    "Proc.\ of the 8th Int.\ Conf.\ on
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  title =        "Conceptual Data Model with Structured Objects for
                  Statistical Databases",
  year =         1996,
  pages =        "168--175"
}

@InProceedings{DeVa99,
  author =       "De Giacomo, Giuseppe and Moshe Y. Vardi",
  title =        "Automata-Theoretic Approach to Planning for Temporally
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  booktitle =    ECP-99,
  volume =       1809,
  series =       LNAI,
  year =         1999,
  publisher =    SV,
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}

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@Misc{DFFLS98,
  author =       "Alin Deutsch and Mary F. Fernandez and Daniela Florescu and
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@Article{DFFL*99,
  author =       "Alin Deutsch and Mary F. Fernandez and Daniela Florescu and
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@Article{DBSB91,
  author =       "Premkumar Devambu and Ronald J. Brachman and Peter J.
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@InProceedings{DCGM*99,
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  year =         1999,
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@Article{DeJo97,
  author =       "Premkumar Devanbu and Mark A. Jones",
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@InProceedings{DeLi91,
  author =       "Premkumar Devambu and Diane Litman",
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  year =         "1991",
  publisher =    MK,
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@Book{Dev97,
  author =       "Barry Devlin",
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  publisher =    AW,
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@InProceedings{DiPG87,
  author =       "Oscar Diaz and Norman Paton and Peter Gray",
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  booktitle =    VLDB-91,
  address =      "Barcelona (Spain)",
  year =         "1991",
  pages =        "317--326",
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@Article{DiLe93,
  author =       "Di Battista, Giuseppe and Maurizio Lenzerini",
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  journal =      TKDE,
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  number =       "3",
  pages =        "439--450",
  year =         "1993",
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@InProceedings{Dieu94,
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  booktitle =    KR-94,
  pages =        "158--169",
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@Article{Dieu98,
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@Article{DiWu91,
  author =       "David M. Dilts and Wenhua Wu",
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  pages =        "237--245"
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@InProceedings{DiMO92,
  author =       "Robert Dionne and Eric Mays and Frank J. Oles",
  title =        "A Non-Well-Founded Approach to Terminological Cycles",
  year =         "1992",
  booktitle =    AAAI-92,
  pages =        "761--766",
  publisher =    AAAIP,
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@InProceedings{DiMO93,
  author =       "Robert Dionne and Eric Mays and Frank J. Oles",
  title =        "The Equivalence of Model Theoretic and Structural
                 Subsumption in Description Logics",
  booktitle =    IJCAI-93,
  year =         "1993",
  publisher =    MK,
  pages =        "710--716",
  address =      "Chamb\'ery (France)",
}

@Article{KvDo01,
  author =       "Jonas Kvarnstr{\"o}m and Patrick Doherty",
  title =        "{TALplanner}: {A} Temporal Logic Based Forward Chaining
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  journal =      AMAI,
  year =         2001,
  note =         "To appear",
}

@Article{DGKK98,
  author =       "Patrick Doherty and Joakim Gustafsson and Lars Karlsson and
                  Jonas Kvarnstr{\"o}m",
  title =        "{(TAL)} {T}emporal {A}ction {L}ogics: {L}anguage
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  journal =      ETAI,
  year =         1998,
  volume =       2,
  number =       "3--4",
  pages =        "273--306",
}

@Article{DoDi99,
  author =       "Ruxandra Domenig and Klaus R. Dittrich",
  title =        "An Overview and Classification of Mediated Query Systems",
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  number =       3,
  pages =        "63--72",
}

@InProceedings{DoRa97,
  author =       "Guozhu Dong and Kotagiri Ramamohanarao",
  title =        "Maintaining Constrained Transitive Closure by
                  Conjunctive Queries",
  booktitle =    DOOD-97,
  year =         1997
}

@Article{DoSu96,
  author =       "Guozhu Dong and Jianwen Su",
  title =        "Conjunctive Query Containment with Respect to Views and
                  Constraints",
  journal =      IPL,
  year =         1996,
  volume =       57,
  number =       2,
  pages =        "95--102"
}

@InProceedings{DoDM96,
  author =       "Francesco Donini and De Giacomo, Giuseppe and Fabio
                  Massacci",
  title =        "{EXPTIME} Tableaux for {$\mathcal{ALC}$}",
  pages =        "107--110",
  booktitle =    DL-96,
  series =       "AAAI Technical Report",
  number =       "WS-96-05",
  publisher =    AAAIP,
  year =         1996,
}

@InProceedings{DoEr92,
  author =       "Francesco M. Donini and Angelo Era",
  title =        "Most Specific Concepts for Knowledge Bases with
                 Incomplete Information",
  editor =       "Y. Yesha",
  pages =        "545--551",
  place =        "Baltimore, MD",
  booktitle =    CIKM-92,
  year =         "1992",
}

@TechReport{DHLM90,
  author =       "Francesco M. Donini and Bernhard Hollunder and
                 Maurizio Lenzerini and Alberto Marchetti Spaccamela and
                 Daniele Nardi and Werner Nutt",
  title =        "The Complexity of Existential Quantification in
                 Concept Languages",
  institution =  DFKI,
  address =      "Kaiserslautern (Germany)",
  year =         "1990",
}

@Article{DHLM92,
  author =       "Francesco M. Donini and Bernhard Hollunder and
                 Maurizio Lenzerini and Alberto Marchetti Spaccamela and
                 Daniele Nardi and Werner Nutt",
  title =        "The Complexity of Existential Quantification in
                 Concept Languages",
  journal =      AIJ,
  year =         "1992",
  pages =        "309--327",
  volume =       "2--3",
}

@InProceedings{DoLe88,
  author =       "Francesco M. Donini and Maurizio Lenzerini",
  title =        "{T}erm{L}og: a Logic for Terminological Knowledge",
  booktitle =    ISMIS-88,
  year =         "1988",
  publisher =    NH,
  pages =        "408--417",
  editor =       "Zbigniew Ras and Lorenza Saitta",
}

@Article{DoLN90,
  author =       "Francesco M. Donini and Maurizio Lenzerini and Daniele
                 Nardi",
  title =        "Using Terminological Reasoning in Hybrid Systems",
  journal =      AIC,
  year =         "1990",
  pages =        "128--138",
  volume =       "3",
  number =       "3",
}

@InProceedings{DoLN90b,
  author =       "Francesco M. Donini and Maurizio Lenzerini and Daniele
                 Nardi",
  title =        "An Efficient Method for Hybrid Deduction",
  booktitle =    ECAI-90,
  year =         "1990",
  publisher =    "Pitman",
  pages =        "246--252",
  editor =       "Luigia Carlucci Aiello",
}

@InProceedings{DLNN91,
  author =       "Francesco M. Donini and Maurizio Lenzerini and Daniele
                 Nardi and Werner Nutt",
  title =        "The Complexity of Concept Languages",
  booktitle =    KR-91,
  editor =       "James Allen and Richard Fikes and Erik Sandewall",
  year =         "1991",
  publisher =    MK,
  pages =        "151--162",
}

@InProceedings{DLNN91b,
  author =       "Francesco M. Donini and Maurizio Lenzerini and Daniele
                 Nardi and Werner Nutt",
  title =        "Tractable Concept Languages",
  booktitle =    IJCAI-91,
  year =         "1991",
  address =      "Sydney (Australia)",
  pages =        "458--463",
}

@TechReport{DLNN92b,
  author =       "Francesco M. Donini and Maurizio Lenzerini and Daniele
                 Nardi and Werner Nutt",
  title =        "Tractable Concept Languages",
  institution =  DIS,
  year =         "1992",
  note =         "Forthcoming",
}

@TechReport{DLNN94,
  author =       "Francesco M. Donini and Maurizio Lenzerini and Daniele
                 Nardi and Werner Nutt",
  title =        "Tractability and Intractability in Concept Languages",
  institution =  DIS,
  year =         "1994",
  note =         "Forthcoming",
}

@TechReport{DLNN95,
  author =       "Francesco M. Donini and Maurizio Lenzerini and Daniele
                 Nardi and Werner Nutt",
  title =        "The Complexity of Concept Languages",
  institution =  DFKI,
  year =         "1995",
  number =       "RR-95-07",
}

@Article{DLNN97,
  author =       "Francesco M. Donini and Maurizio Lenzerini and Daniele
                 Nardi and Werner Nutt",
  title =        "The Complexity of Concept Languages",
  journal =      ICOMP,
  year =         "1997",
  volume =       134,
  pages =        "1--58",
}

@Unpublished{DLNN99,
  author =       "Francesco M. Donini and Maurizio Lenzerini and Daniele Nardi
                  and Werner Nutt",
  title =        "Tractability and Intractability in Description Logics",
  note =         "Available at
                  ftp://ftp.dis.uniroma1.it/pub/ai/papers/dlnn99d.ps.gz",
  year =         1999,
}

@InProceedings{DLNNS92,
  author =       "Francesco M. Donini and Maurizio Lenzerini and Daniele
                 Nardi and Werner Nutt and Andrea Schaerf",
  title =        "Adding Epistemic Operators to Concept Languages",
  booktitle =    KR-92,
  publisher =    MK,
  year =         "1992",
  pages =        "342--353",
}

@InProceedings{DLNNS93,
  author =       "Francesco M. Donini and Maurizio Lenzerini and Daniele
                 Nardi and Werner Nutt and Andrea Schaerf",
  title =        "Queries, Rules and Definitions as Epistemic Sentences
                 in Concept Languages",
  booktitle =    "Proc.\ of the ECAI Workshop on Knowledge
                 Representation and Reasoning",
  year =         "1994",
  publisher =    SV,
  series =       LNAI,
  volume =       810,
  pages  =       "113--132"
}

@InProceedings{DLNNS94,
  author =       "Francesco M. Donini and Maurizio Lenzerini and Daniele
                 Nardi and Werner Nutt and Andrea Schaerf",
  title =        "Queries, Rules and Definitions ",
  booktitle =    "Foundations of Knowledge Representation and Reasoning",
  publisher =    SV,
  year =         "1994",
}

@TechReport{DLNNS95,
  author =       "Francesco M. Donini and Maurizio Lenzerini and Daniele
                 Nardi and Werner Nutt and Andrea Schaerf",
  title =        "Adding Epistemic Operators to Description Logics",
  institution =  DIS,
  year =         "1996",
  number =       "16-96"
}

@Article{DLNNS98,
  author =       "Francesco M. Donini and Maurizio Lenzerini and Daniele Nardi
                  and Werner Nutt and Andrea Schaerf",
  title =        "An Epistemic Operator for Description Logics",
  journal =      AIJ,
  volume =       100,
  number =       "1--2",
  pages =        "225--274",
  year =         1998,
} 

@InProceedings{DLNS91,
  author =       "Francesco M. Donini and Maurizio Lenzerini and Daniele Nardi
                  and Andrea Schaerf",
  title =        "A Hybrid System Integrating {D}atalog and Concept Languages",
  booktitle =    AI*IA-91,
  year =         1991,
  publisher =    SV,
  volume =       549,
  series =       LNAI,
  note =         "An extended version appeared also in the Working Notes of the
                  AAAI Fall Symposium on ``Principles of Hybrid Reasoning''",
}

@InProceedings{DLNS91b,
  author =       "Francesco M. Donini and Maurizio Lenzerini and Daniele
                 Nardi and Andrea Schaerf",
  title =        "Epistemic Operators in Concept Languages",
  booktitle =    "Terminological Logic Users Workshop --- Workshop
                  Statements",
  editor =       "C. Peltason and Kai von Luck and C. Kindermann",
  publisher =    "Technische Universit{\"{}a}t Berlin",
  year =         "1991",
}

@TechReport{DLNS92,
  author =       "Francesco M. Donini and Maurizio Lenzerini and Daniele
                 Nardi and Andrea Schaerf",
  title =        "From Subsumption to Instance Checking",
  institution =  DIS,
  year =         "1992",
  number =       "15.92",
}

@Article{DLNS94,
  author =       "Francesco M. Donini and Maurizio Lenzerini and Daniele
                 Nardi and Andrea Schaerf",
  title =        "Deduction in Concept Languages: From Subsumption to
                 Instance Checking",
  journal =      JLC,
  year =         "1994",
  volume =       "4",
  number =       "4",
  pages =        "423--452"
}

@InCollection{DLNS96,
  author =       "Francesco M. Donini and Maurizio Lenzerini and Daniele
                 Nardi and Andrea Schaerf",
  title =        "Reasoning in Description Logics",
  booktitle =    "Principles of Knowledge Representation",
  year =         "1996",
  editor =       "Gerhard Brewka",
  publisher =    "{CSLI} Publications",
  series =       "Studies in Logic, Language and Information",
  pages =        "193--238",
}

@Article{DLNS98,
  author =       "Francesco M. Donini and Maurizio Lenzerini and Daniele Nardi
                  and Andrea Schaerf",
  title =        "{${\cal AL}$-log}: Integrating {D}atalog and Description
                  Logics",
  year =         1998,
  journal =      JIIS,
  pages =        "227--252",
  volume =       10,
  number =       3,
}

@InProceedings{DMNR96,
  author =       "Francesco M. Donini and Fabio Massacci and Daniele Nardi
                  and Riccardo Rosati",
  title =        "A Uniform Tableaux Method for Nonmonotonic Modal Logics",
  booktitle =    JELIA-96,
  editor =       "Alferes, J. J. and Pereira, L. M. and Orlowska, E.",
  volume =       1126,
  series =       LNAI,
  year =         1996,
  publisher =    SV,
  pages =        "87--103"
}

@InProceedings{DoNR95,
  author =       "Francesco M. Donini and Daniele Nardi and Riccardo Rosati",
  title =        "Non-first-order Features in Concept Languages",
  booktitle =    AI*IA-95,
  year =         1995,
  publisher =    SV,
  series =       LNAI,
  volume =       992,
  editor =       "M. Gori and G. Soda",
  pages =        "91--102",
}

@Article{DoNR97,
  author =       "Francesco M. Donini and Daniele Nardi and Riccardo Rosati",
  journal =      JLC,
  month =        aug,
  number =       4,
  title =        "Ground Nonmonotonic Modal Logics",
  volume =       7,
  pages =        "523--548",
  year =         1997,
}

@InProceedings{DoNR97b,
  author =       "Francesco M. Donini and Daniele Nardi and Riccardo Rosati",
  booktitle =    IJCAI-97,
  pages =        "136--141",
  title =        "Autoepistemic Description Logics",
  year =         1997,
}

@Article{Dorr92,
  author =       "Bonnie J. Dorr",
  title =        "The Use of Lexical Semantics in Interlingual Machine
                  Translation",
  journal =      JMT,
  year =         1992,
  volume =       7,
  pages =        "135--193",
}

@InProceedings{DoVo93,
  author =       "Bonnie J. Dorr and Clare R. Voss",
  title =        "Machine {T}ranslation of Spatial Expressions: Defining the
                  Relation Between an Interlingua and a Knowledge
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  booktitle =    AAAI-93,
  year =         1993,
}

@Article{DoVo95,
  author =       "Bonnie J. Dorr and Clare R. Voss",
  title =        "Toward a Lexicalized Grammar for Interlinguas",
  journal =      jMT,
  year =         1995,
  volume =       10,
  number =       1,
  pages =        "139--180",
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@InProceedings{DVPK94,
  author =       "B. Dorr and C. Voss and E. Peterson and M. Kiker",
  title =        "Concept-based Lexical Selection",
  booktitle =    "Working notes of the AAAI Fall Symposium on ``Knowledge
                  Representation for Natural Language Processing in Implemented
                  Systems''",
  year =         1994,
}

@Article{DoPa91,
  author =       "Jon Doyle and Ramesh S. Patil",
  title =        "Two Theses of Knowledge Representation: Language
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  journal =      AIJ,
  year =         "1991",
  volume =       "48",
  pages =        "261--297",
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@InProceedings{DuBS90,
  author =       "Pratul Dublish and Joachim Biskup and Yehoshua Sagiv",
  title =        "Optimization of a Subclass of Conjunctive Queries",
  booktitle =    ICDT-90,
  year =         1990,
  pages =        "455--469"
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@PhdThesis{Dusc97,
  author =       "Oliver Duschka",
  title =        "Query Planning and Optimization in Information Integration",
  school =       "Stanford University",
  year =         1997,
}

@InProceedings{DuGe97,
  author =       "Oliver M. Duschka and Michael R. Genesereth",
  title =        "Answering Recursive Queries Using Views",
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%fffffffffffffffffffffffff
%fffffffffffffffffffffffff
    
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%ggggggggggggggggggggggggg
%ggggggggggggggggggggggggg

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@Article{Grad99,
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@InProceedings{Grad99b,
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@InCollection{Grad99c,
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@Article{Grad99d,
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%% Grad00 changed to Grad99d

@InProceedings{GrHO00,
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@InProceedings{GrOR97,
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@InProceedings{GrOR97b,
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%hhhhhhhhhhhhhhhhhhhhhhhhhh
%hhhhhhhhhhhhhhhhhhhhhhhhhh

@InProceedings{HaLM98,
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@InProceedings{HaMo00,
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@InProceedings{HaMo01,
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@InProceedings{HaMo01b,
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  novolume =     "?",
  nonumber =     "?",
  nopages =      "?",
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@Article{Halp95,
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@PhdThesis{Horr97b,
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  year =         1997,
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@InProceedings{Horr98,
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@Article{HoSa99,
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@InProceedings{HoSa01,
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%iiiiiiiiiiiiiiiiiiiiiiiii
%iiiiiiiiiiiiiiiiiiiiiiiii

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%jjjjjjjjjjjjjjjjjjjjjjjjj
%jjjjjjjjjjjjjjjjjjjjjjjjj

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@Book{JLVV99,
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@InProceedings{JQCL*00,
  author =       "Matthias Jarke and Christoph Quix and Diego Calvanese and
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  title =        "Metadata-Driven Management of Data Warehouses: {T}he {DWQ}
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@InProceedings{JaVa97,
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  year =         1996,
  pages =        "402--412"
}

@TechReport{Levy99,
  author =       "Alon Y. Levy",
  title =        "Answering Queries Using Views: A Survey",
  institution =  "University of Washinghton",
  year =         1999,
}

@InCollection{Levy00,
  author =       "Alon Y. Levy",
  title =        "Logic-Based Techniques in Data Integration",
  booktitle =    "Logic Based Artificial Intelligence",
  year =         "2000",
  editor =       "Jack Minker",
  publisher =    KAP,
}

@Article{LeFS97,
  author =       "Alon Levy and Richard E. Fikes and Shuky Sagiv",
  title =        "Speeding up Inference using Relevance Reasoning: {A}
                  Formalism and Algorithms",
  journal =      AIJ,
  year =         1997,
  volume =       97,
  number =       "1--2",
}

@InProceedings{LMSS95,
  author =       "Alon Y. Levy and Alberto O. Mendelzon and Yehoshua Sagiv and
                  Divesh Srivastava",
  title =        "Answering Queries Using Views",
  booktitle =    PODS-95,
  year =         1995,
  pages =        "95--104"
}

@InProceedings{LeMu96,
  author =       "Alon Y. Levy and Inderpal Singh Mumick",
  title =        "Reasoning with Aggregation Constraints",
  booktitle =    EDBT-96,
  editor =       "P. Apers and M. Bouzeghoub and G. Gardarin",
  volume =       1057,
  series =       LNCS,
  year =         1996,
  publisher =    SV,
  address =      "Avignon (France)",
  pages =        "514--534"
}

@InProceedings{LMSS93,
  author =       "Alon Y. Levy and Inderpal S. Mumick and Yehoshua Sagiv and
                  Oded Shmueli",
  title =        "Equivalence, Query-Reachability, and Satisfiability in
                  Datalog Extensions",
  booktitle =    PODS-93,
  year =         1993,
  pages =        "109--122",
}

@InProceedings{LeRO96,
  author =       "Alon Y. Levy and Anand Rajaraman and Joann J. Ordille",
  title =        "Query Answering Algorithms for Information Agents",
  booktitle =    AAAI-96,
  year =         "1996",
  pages =        "40--47"
}

@InProceedings{LeRO96b,
  author =       "Alon Y. Levy and Anand Rajaraman and Joann J. Ordille",
  title =        "Querying Heterogenous Information Sources Using Source
                  Descriptions",
  booktitle =    VLDB-96,
  year =         "1996",
}

@InProceedings{LeRo96c,
  author =       "Alon Y. Levy and Marie-Christine Rousset",
  title =        "Verification of Knowledge Bases based on Containment
                  Checking",
  booktitle =    AAAI-96,
  year =         "1996",
  pages =        "585--591"
}

@Article{LeRo98,
  author =       "Alon Y. Levy and Marie-Christine Rousset",
  title =        "Verification of Knowledge Bases based on Containment
                  Checking",
  journal =      AIJ,
  year =         "1998",
  volume =       "101(1-2)",
  pages =        "227--250",
}

@InProceedings{LeRo96d,
  author =       "Alon Y. Levy and Marie-Christine Rousset",
  title =        "{CARIN}: {A} Representation Language Combining {H}orn Rules
                  and Description Logics",
  booktitle =    ECAI-96,
  year =         1996,
  pages =        "323--327"
}

@Article{LeRo98b,
  author =       "Alon Y. Levy and Marie-Christine Rousset",
  title =        "Combining Horn Rules and Description Logics in {CARIN}",
  journal =      AIJ,
  year =         1998,
  volume =       104,
  number =       "1--2",
  pages =        "165--209",
}

@InProceedings{LeRo96e,
  author =       "Alon Y. Levy and Marie-Christine Rousset",
  title =        "The Limits on Combining Recursive {H}orn Rules with
                  Description Logics",
  booktitle =    AAAI-96,
  year =         "1996",
  pages =        "577--584"
}

@InProceedings{LeRU96,
  author =       "Alon Y. Levy and Anand Rajaraman and Jeffrey D. Ullman",
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  booktitle =    PODS-96,
  year =         1996,
  pages =        "227--237"
}

@TechReport{LeRo97,
  author =       "Alon Y. Levy and Marie-Christine Rousset",
  title =        "{CARIN}: {A} Representation Language Combining {H}orn Rules
                  and Description Logics",
  year =         1997,
  institution =  "AT\&T",
}

@InProceedings{LeRo97b,
  author =       "Alon Y. Levy and Marie-Christine Rousset",
  title =        "Verification of Knowledge Bases: a Unifying Logical View",
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                  Validation and Verification of Knowledge Based Systems",
  year =         "1997",
  address =      "Leuven, Belgium",
}

@Article{LeSK95,
  author =       "Alon Y. Levy and Divesh Srivastava and Thomas Kirk",
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  volume =       5,
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@InProceedings{LeSa95,
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  year =         1995,
  pages =        "163-173"
}

@InProceedings{LeSu97,
  author =       "Alon Y. Levy and Dan Suciu",
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  booktitle =    PODS-97,
  year =         1997,
  pages =        "20--31"
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@Book{Lewi79,
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@Article{Lifs94,
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@InCollection{Lifs94b,
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@Book{Lloy87,
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@Article{LuGN00,
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@InProceedings{Lutz99,
  author =       "Carsten Lutz",
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@InProceedings{Lutz99b,
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@InProceedings{LuSa00,
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@InProceedings{LuSa00b,
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@InProceedings{LuSW01,
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  year =         2001,
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@InProceedings{LSWZ01,
  author =       "Carsten Lutz and Holger Sturm and Frank Wolter and Michael
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  year =         2001,
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@InProceedings{LuGM01,
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%mmmmmmmmmmmmmmmmmmmmmmmmm
%mmmmmmmmmmmmmmmmmmmmmmmmm

@InProceedings{MacG88,
  author =       "Robert Mac{G}regor",
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@TechReport{MaBa87,
  author =       "Robert Mac{G}regor and R. Bates",
  title =        "The {L}oom Knowledge Representation Language",
  institution =  "University of Southern California, Information Science
                  Institute",
  address =      "Marina del Rey (CA, USA)",
  number =       "ISI/RS-87-188",
  year =         1987,
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@InCollection{MacG91,
  author =       "Robert Mac{G}regor",
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  editor =       "John F. Sowa",
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@Article{MacG91b,
  author =       "Robert Mac{G}regor",
  title =        "Inside the {LOOM} Description Classifier",
  journal =      SIGART,
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  pages =        "88--92",
  volume =       "2",
  number =       "3",
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@InProceedings{MacG92,
  author =       "Robert Mac{G}regor",
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  year =         "1992",
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@InProceedings{MaBr92,
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@Article{MaBu91,
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@InProceedings{MacG94,
  author =       "Robert Mac{G}regor",
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@Book{MaSi90,
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@Book{Maie83,
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@Article{MaSc91,
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@TechReport{MaDe98,
  title =        "{XML} {L}inking {L}anguage ({XL}ink) --
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@Book{MaPn92,
  author =       "Z. Manna and A. Pnueli",
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@TechReport{MaMo93,
  author =       "Margarida Mamede and Lu\'{\i}s Monteiro",
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  institution =  "ESPRIT Project 6810, Compulog 2",
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@InProceedings{MaBr88,
  author =       "Rainer Manthey and Fran\c{c}ois Bry",
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@Book{Mart75,
  author =       "B{\'e}la Martos",
  title =        "Nonlinear Programming Theory and Methods",
  publisher =    NH,
  year =         1975
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%% was DoMa00
@InProceedings{MaDo00,
  author =       "Fabio Massacci and Francesco M. Donini",
  title =        "Design and Results of {TANCS-00}",
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@Article{Mati71,
  author =       "Y. Matiyasevich",
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  year =         1971,
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@Article{MaDW91,
  author =       "E. Mays and R. Dionne and R. Weida",
  title =        "{K-REP} System Overview",
  journal =      SIGART,
  year =         "1991",
  volume =       "2",
  number =       "3",
}

@Misc{McAl91,
  author =       "David McAllester",
  note =         "Unpublished Manuscript",
  year =         "1991",
}

@InProceedings{McAl96,
  author =       "David A. McAllester and Robert Givan and Carl Witty and
                  Dexter Kozen",
  title =        "Tarskian Set Constraints",
  booktitle =    LICS-96,
  year =         1996,
  pages =        "138--147",
}

@InProceedings{McTu97,
  author =       "Norman McCain and Hudson Turner",
  title =        "Causal Theories of Action and Change",
  booktitle =    AAAI-97,
  pages =        "460--465",
  year =         1997,
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@InProceedings{McTu98,
  author =       "Norman McCain and Hudson Turner",
  title =        "Satisfiability planning with Causal Theories",
  booktitle =    KR-98,
  pages =        "212--223",
  year =         1998,
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@Article{McCa80,
  author =       "John McCarthy",
  title =        "Circumscription --- A Form of Non-Monotonic Reasoning",
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  volume =       13,
  note =         "Republished in \cite{Gins87}."
}

@Article{McHa69,
  author =       "John McCarthy and Patrick J. Hayes",
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@InProceedings{Mcde82,
  author =       "John McDermott",
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  booktitle =    AIJ,
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@InProceedings{McGu92,
  author =       "Deborah L. McGuinness",
  title =        "Making Description Logic Based Knowledge
                 Representation Systems more Usable",
  booktitle =    "Working Notes of the AAAI Fall Sysmposium on Issues on
                 Description Logics: Users meet Developers",
  year =         "1992",
  pages =        "56--58",
}

@PhdThesis{Mcgu96,
  title =        "Explaining Reasoning in Description Logics",
  author =       "Deborah L. McGuinness",
  school =       "Department of Computer Science, Rutgers University",
  number =       "LCSR-TR-277",
  month =        oct,
  year =         1996,
  note =         "Also available as Rutgers Technical Report Number
                  LCSR-TR-277",
}

@InProceedings{Mcgu98,
  author =       "Deborah L. McGuinness",
  title =        "Ontological Issues for Knowledge-Enhanced Search",
  booktitle =    "Proceedings of Formal Ontology in Information Systems.",
  note =         "Also published in {\it Frontiers in Artificial Intelligence
                  and Applications}, IOS-Press, 1998",
  year =         1998,
}

%% was McAI95
@InProceedings{McRI95,
  author =       "Deborah L. McGuinness and Lori Alperin Resnick and Charles
                  Isbell",
  title =        "{D}escription {L}ogic in Practice: A {CLASSIC} Application",
  booktitle =    IJCAI-95,
  year =         1995,
  pages =        "2045--2046",
}

@InProceedings{McBo95,
  author =       "Deborah L. McGuinness and Alex Borgida",
  title =        "Explaining Subsumption in Description Logics",
  booktitle =    IJCAI-95,
  pages =        "816--821",
  year =         1995,
}

%% was MPAI*98
@Article{MPRI*98,
  title =        "A Description Logic Based Configurator for the Web",
  author =       "Deborah McGuinness and Patel-Schneider, Peter F. and Lori
                  Alperin Resnick and Charles Isbell and Matt Parker and Chris
                  Welty",
  journal =      SIGART,
  year =         1998,
  volume =       9,
  number =       2,
  pages =        "20--22",
}

@Article{McWr98,
  author =       "Deborah L. McGuinness and Jon R. Wright",
  title =        "An Industrial Strength Description Logic-based Configuration
                  Platform",
  year =         1998,
  journal =      IEEE-IS,
 pages=         "69--77",
}

@Article{McWr98b,
  author =       "Deborah McGuinness and Jon R. Wright",
  title =        "Conceptual Modelling for Configuration: {A} Description
                  Logic-Based Approach",
  journal =      "Artificial Intelligence for Engineering Design, Analysis, and
                  Manufacturing J.\ -- Special Issue on Configuration",
  year =         1998,
  volume =       12,
  pages =        "333--344",
}

@TechReport{McWi99,
  author =       "Jason McHugh and Jennifer Widom",
  title =        "Optimizing Branching Path Expressions",
  institution =  "Stanford University",
  year =         1999,
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@Article{MeMA99,
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@Article{MeMM97,
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@PhdThesis{Meyd92,
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@InCollection{Meyd98,
  author =       "Ron van der Meyden",
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@Book{MeHo92,
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@Article{MiIR94,
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@InProceedings{MiSu99,
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@InProceedings{MiSu99b,
  author =       "Tova Milo and Dan Suciu",
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  author =       "Tova Milo and Sagit Zohar",
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@Article{MyBW80,
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%nnnnnnnnnnnnnnnnnnnnnnnnn
%nnnnnnnnnnnnnnnnnnnnnnnnn

@InProceedings{NaRo95,
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@Article{Nebe88,
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@Article{Nebe90,
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@Book{Nebe90b,
  author =       "Bernhard Nebel",
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@InCollection{Nebe91,
  author =       "Bernhard Nebel",
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  editor =       "John F. Sowa",
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@InProceedings{NeLu88,
  author =       "Bernhard Nebel and Kai von Luck",
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  booktitle =    ISMIS-88,
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  pages =        "260--269",
}

@InProceedings{NePe91,
  author =       "Bernhard Nebel and Christof Peltason",
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@TechReport{NePe90,
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  institution =  "Fachbereich Informatik, Technische Universit{\"a}t Berlin",
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  year =         "1990",
  address =      "Berlin (Germany)",
}

@TechReport{NeSm89,
  author =       "Bernhard Nebel and Gert Smolka",
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}

@InCollection{NeSm90,
  author =       "Bernhard Nebel and Gert Smolka",
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@TechReport{NeSm91,
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  year =         1991,
  institution =  DFKI,
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  number =       "RR-91-15",
  note =         "Appeared also in O. Herzog and C.-R. Rollinger (eds.),
                 {\it Textunderstanding in {LILOG}: Integrating
                 Computational Linguistics and {A}rtificial
                 {I}ntelligence}, Springer-Verlag, 1991",
}

@InCollection{NeSm91b,
  author =       "Bernhard Nebel and Gert Smolka",
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  year =         "1991",
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  editor =       "O. Herzog and C.-R. Rollinger",
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@Article{NeAM97,
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@Book{NiNi92,
  author =       "H. R. Nielson and F. Nielson",
  title =        "Semantics with Applications",
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  year =         1992,
}

%ooooooooooooooooooooooooo
%ooooooooooooooooooooooooo

@InProceedings{Ohei99,
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@Article{OpSu88,
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@Article{OuNa94,
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@InProceedings{Owsn90,
  author =       "Bernd Owsnicki-Klewe",
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  booktitle =    ECAI-90,
  year =         "1990",
}

%ppppppppppppppppppppppppp
%ppppppppppppppppppppppppp

@InProceedings{PaST97,
  author =       "Leszek Pacholski and Wieslaw Szwast and Lidia Tendera",
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@Article{PaST00,
  author =       "Leszek Pacholski and Wies{\l}aw Szwast and Lidia Tendera",
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@InProceedings{PaNe93,
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  editor =       "J. Komorowski and Z. W. Ra\'s",
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@InProceedings{PaZh93,
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@InProceedings{PaLK97,
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@InProceedings{PaTU00,
  author =       "Luigi Palopoli and Giorgio Terracina and Domenico Ursino",
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@InProceedings{PaTU01,
  author =       "Luigi Palopoli and Giorgio Terracina and Domenico Ursino",
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@Article{PaTo97,
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@InProceedings{PaSU98,
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@Article{PaSU99,
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@Article{PPTU00,
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@Article{Papa81,
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@Book{Papa94,
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@Book{PaSt82,
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@Article{PaYa91,
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@InProceedings{PaAG96,
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%% was PaFU96
@InProceedings{PaGU96,
  author =       "Yannis Papakonstantinou and Hector Garcia-Molina and Jeffrey
                  D. Ullman",
  editor =       "Stanley Y. W. Su",
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  year =         1996,
  pages =        "132--141",
}

@InProceedings{PaGW95,
  author =       "Yannis Papakonstantinou and Garcia-Molina, Hector and
                  Jennifer Widom",
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  year =         1995,
  pages =        "251--260"
}

@InProceedings{PaVa99,
  author =       "Yannis Papakonstantinou and Vasilis Vassalos",
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  year =         1999
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@InProceedings{PaVi00,
  author =       "Yannis Papakonstantinou and Victor Vianu",
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  year =         2000,
  pages =        "35--46"
}

@InProceedings{Pari80,
  author =       "Rohit Parikh",
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  address =      "Las Vegas (USA)",
  year =         "1980"
}

@InProceedings{Pari81,
  author =       "Rohit Parikh",
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  volume =       125,
  publisher =    SV,
  pages =        "102--144",
  year =         1981,
}

@Article{Pari83,
  author =       "Rohit Parikh",
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  journal =      FCT,
  volume =       4,
  year =         1983
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@Article{PaVa96,
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@InProceedings{PaVa96b,
  author =       "C. Paris and Vander Linden, K.",
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  booktitle =    COLING-96,
  year =         1996,
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@Article{Park70,
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  year =         1970,
}

@Article{Park76,
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@Article{PaTi85,
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  year =         1985,
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@Article{PaTi91,
  author =       "Solomon Passy and Tinko Tinchev",
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@InProceedings{Pate84,
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  title =        "Small Can Be Beautiful in Knowledge Representation",
  booktitle =    "Proc.\ of the {IEEE} Workshop on Knowledge-Based
                 Systems",
  year =         "1984",
  note =         "An extended version appeared as Fairchild Tech.\ Rep.\
                 660 and {FLAIR} Tech.\ Rep.\ 37, October 1984.",
}

@InProceedings{Pate86,
  author =       "Patel-Schneider, Peter F.",
  title =        "A Four-Valued Semantics for Frame-Based Description
                  Languages",
  booktitle =    AAAI-86,
  year =         1986,
  pages =        "344--348",
}

@Article{Pate87,
  author =       "Patel-Schneider, Peter F.",
  title =        "A Hybrid, Decidable, Logic-Based Knowledge Representation
                  System",
  journal =      CI,
  year =         1987,
  pages =        "64--77",
  volume =       3,
  number =       2,
}

@InProceedings{Pate88,
  author =       "Patel-Schneider, Peter F.",
  title =        "Adding Number Restrictions to a Four-Valued Terminological
                  Logic",
  booktitle =    AAAI-88,
  year =         1988,
  pages =        "485--490",
}

@Article{Pate89,
  author =       "Patel-Schneider, Peter F.",
  title =        "A Four-Valued Semantics for Terminological Logic",
  journal =      AIJ,
  year =         1989,
  pages =        "319--351",
  volume =       38,
  number =       1,
}

@Article{Pate89b,
  author =       "Patel-Schneider, Peter F.",
  title =        "Undecidability of Subsumption in {NIKL}",
  journal =      AIJ,
  volume =       39,
  year =         1989,
  pages =        "263--272",
}

@InProceedings{Pate98,
  author =       "P. F. Patel-Schneider",
  title =        "{DLP} System Description",
  pages =        "87--89",
  booktitle =    DL-98,
  year =         1998,
  publisher =    "CEUR Electronic Workshop Proceedings,
                  http://ceur-ws.org/Vol-11/",
}

@InProceedings{Pate99,
  author =       "Patel-Schneider, Peter F.",
  title =        "{DLP}",
  booktitle =    DL-99,
  year =         1999,
  pages =        "9--13",
  publisher =    "CEUR Electronic Workshop Proceedings,
                  http://ceur-ws.org/Vol-22/",
}

@Article{POKG*90,
  author =       "P. F. Patel-Schneider and B. Owsnicki-Klewe and A.
                 Kobsa and N. Guarino and R. MacGregor and W. S. Mark
                 and D. L. McGuinness and B. Nebel and A. Schmiedel and
                 J. Yen",
  title =        "Report on the Workshop on Term Subsumption Languages
                 in Knowledge Representation",
  journal =      AIM,
  year =         "1990",
  volume =       "11",
  number =       "2",
  pages =        "16--22",
}

%% was also PaSw93b
@TechReport{PaSw93,
  title =        "Description-Logic Knowledge Representation System
                  Specification from the {KRSS} Group of the {ARPA} Knowledge
                  Sharing Effort ",
  author =       "Patel-Schneider, Peter F. and Bill Swartout",
  year =         1993,
  institution =  "AI Principles Research Department, AT\&T Bell Laboratories",
  note =         "Available at \url{http://dl.kr.org/}",
}

@InProceedings{PaBL84,
  author =       "Patel-Schneider, Peter F. and Ronald J. Brachman and Hector
                  J. Levesque",
  title =        "{ARGON}: Knowledge Representation Meets Information
                  Retrieval",
  booktitle =    "Proc.\ of the 1st Conf.\ on Artificial Inteligence
                  Applications",
  year =         1984,
  note =         "Also available as Fairchild Technical Report 654 and {FLAIR}
                  Technical Report 29",
}

%% was PMBR91
@Article{PMBRB91,
  author =       "Patel-Schneider, Peter F. and Deborah L. McGuiness and Ronald
                  J. Brachman and Lori Alperin Resnick and Alexander Borgida",
  title =        "The {CLASSIC} Knowledge Representation System: Guiding
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  journal =      SIGART,
  year =         1991,
  pages =        "108--113",
  volume =       2,
  number =       3,
}

@Article{Pelt91,
  author =       "C. Peltason",
  title =        "The {BACK} System --- an Overview",
  journal =      SIGART,
  year =         1991,
  pages =        "114--119",
  volume =       2,
  number =       3,
}

@InProceedings{PiSS92,
  author =       "Barbara Piza and Klaus-Dieter Schewe and Joachim W. Schmidt",
  title =        "Term Subsumption with Type Constructors",
  booktitle =    CIKM-92,
  address =      "Baltimore (USA)",
  editor =       "Y. Yesha",
  pages =        "449--456",
  year =         1992,
}

@InProceedings{Pnue77,
  author =       "Amir Pnueli",
  title =        "The Temporal Logic of Programs",
  booktitle =    FOCS-77,
  pages =        "46--57",
  year =         1977,
}

@InProceedings{PoLe00,
  author =       "Rachel Pottinger and Alon Y. Levy",
  title =        "A Scalable Algorithm for Answering Queries Using Views",
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  year =         2000,
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@Book{Prio67,
  author =       "Arthur Prior",
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  publisher =    OUP,
  year =         1967,
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@InProceedings{Prat78,
  author =       "Vaugham R. Pratt",
  title =        "A Practical Decision Method for Propositional Dynamic Logic",
  booktitle =    STOC-78,
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  year =         1978,
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@InProceedings{Prat79,
  author =       "Vaugham R. Pratt",
  title =        "Models of Program Logic",
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  year =         1979,
}

@Article{Prat80,
  author =       "Vaugham R. Pratt",
  title =        "A Near-Optimal Method for Reasoning About Action",
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  volume =       "20",
  pages =        "231--255",
  year =         "1980"
}

@InProceedings{Prat81,
  author =       "Vaugham R. Pratt",
  title =        "Using Graphs to Understand {PDL}",
  booktitle =    WOLP-81,
  series =       LNCS,
  volume =       125,
  publisher =    SV,
  pages =        "387--396",
  year =         1981,
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@InProceedings{Prat81b,
  author =       "Vaugham R. Pratt",
  title =        "A Decidable {$\mu$}-Calculus (Preliminary Report)",
  pages =        "421--428",
  booktitle =    FOCS-81,
  publisher =    IEEEP,
  year =         1981,
}

@Article{Pust88,
  author =       "J. Pustejovsky",
  title =        "Constraints on the Acquisition of Semantic Knowledge",
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  year =         1988,
  volume =       3,
  pages =        "247--268",
}

%qqqqqqqqqqqqqqqqqqqqqqqqq
%qqqqqqqqqqqqqqqqqqqqqqqqq

@InProceedings{Qian96,
  author =       "Xiaolei Qian",
  title =        "Correct Schema Transformations",
  booktitle =    EDBT-96,
  editor =       "P. Apers and M. Bouzeghoub and G. Gardarin",
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  volume =       1057,
  year =         1996,
  pages =        "114--128"
}

@InProceedings{Qian96b,
  author =       "Xiaolei Qian",
  title =        "Query folding",
  booktitle =    ICDE-96,
  year =         1996,
  pages =        "48--55",
}

@InProceedings{Quan93,
  author =       "Joachim Quantz",
  title =        "Interpretation as Exception Minimization",
  booktitle =    IJCAI-93,
  year =         1993,
  pages =        "1310--1315",
}

@PhdThesis{Quan95,
  author =       "Joachim Quantz",
  title =        "Preferential Disambiguation in Natural Language Processing",
  school =       "TU-Berlin (Germany)",
  year =         1995,
}

@TechReport{QuKi90,
  author =       "Joachim Quantz and Carsten Kindermann",
  title =        "Implementation of the {BACK} System Version 4",
  institution =  "Fachbereich Informatik, Technische Universit{\"a}t Berlin",
  number =       "{KIT}-Report 78",
  year =         "1990",
  address =      "Berlin (Germany)",
}

@InProceedings{QuRo92,
  author =       "Joachim Quantz and Veronique Royer",
  title =        "A Preference Semantics for Defaults in Terminological
                 Logics",
  booktitle =    KR-92,
  publisher =    MK,
  year =         "1992",
  pages =        "294--305",
}

@Article{QuSc94,
  author =       "J. Quantz and B. Schmitz",
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@InProceedings{QRSUW95,
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  publisher =    SV,
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@Article{Quil67,
  author =       "M. Ross Quillian",
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  pages =        "410--430",
  note =         "Republished in \cite{BrLe85}",
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@InCollection{Quil68,
  author =       "M. Ross Quillian",
  title =        "Semantic Memory",
  booktitle =    "Semantic Information Processing",
  year =         1968,
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  editor =       "M. Minsky",
  publisher =    MIT,
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%rrrrrrrrrrrrrrrrrrrrrrrrr
%rrrrrrrrrrrrrrrrrrrrrrrrr

@Article{Rabi69,
  author =       "M. O. Rabin",
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@InProceedings{Rabi70,
  author =       "M. O. Rabin",
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@InProceedings{Rabi72,
  author =       "M. O. Rabin",
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@Article{RaSc59,
  author =       "M. O. Rabin and D. Scott",
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@InProceedings{RaSU95,
  author =       "Anand Rajaraman and Yehoshua Sagiv and Jeffrey D. Ullman",
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  year =         1995,
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@InProceedings{RaCC92,
  author =       "David A. Randell and Zhan Cui and Anthony G. Cohn",
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  year =         1992,
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}

@InProceedings{ReNG93,
  author =       "A. L. Rector and W. A. Nowlan and A. Glowinski",
  title =        "Goals for Concept Representation in the {\textsc{Galen}}
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  year =         1993 ,
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}

@Article{RBGH*97,
  author =       "A. Rector and S. Bechhofer and C. A. Goble and I. Horrocks
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@Article{RPRG94,
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@InCollection{Reit78,
  author =       "Raymond Reiter",
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  year =         "1978",
  pages =        "119--140",
  editor =       "Herv\'e Gallaire and Jack Minker",
  publisher =    PLENUM,
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@Article{Reit80,
  author =       "Raymond Reiter",
  title =        "A Logic for Default Reasoning",
  journal =      AIJ,
  year =         "1980",
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@InCollection{Reit84,
  author =       "Raymond Reiter",
  title =        "Towards a Logical Reconstruction of Relational
                 Database Theory",
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  year =         "1984",
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@ARTICLE{Reit90,
  author =       "Raymond Reiter",
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  year =         "1990",
  pages =        "127--153"
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@InProceedings{Reit00,
  author =       "Raymond Reiter",
  title =        "Narratives as Programs",
  booktitle =    KR-00,
  pages =        "99--108",
  year =         2000,
}

@InProceedings{Reit90b,
  author =       "Raymond Reiter",
  pages =        "96--113",
  title =        "On Asking What a Database Knows",
  booktitle =    "Computational Logics, Symposium Proceedings",
  year =         1990,
  editor =       "John W. Lloyd",
  publisher =    SV,
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@TechReport{Reit99,
  author =       "Raymond Reiter",
  title =        "Open World Planning in the Situation Calculus",
  institution =  "University of Toronto",
  year =         1999,
}



@Book{Reit01,
  author =       "Raymond Reiter",
  title =        "Knowledge in Action: {L}ogical Foundations for Specifying and
                  Implementing Dynamical Systems",
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  publisher =    MIT,
}

@Article{Rich56,
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  year =         "1956",
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@Article{Rich91,
  author =       "Rich, Charles (ed.)",
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@Article{Robi71,
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@InProceedings{Rosa97,
  author =       "Riccardo Rosati",
  title =        "Reasoning with Minimal Belief and Negation as Failure:
                  {A}lgorithms and Complexity",
  booktitle =    AAAI-97,
  key =          "nmr-deduct",
  publisher =    AAAIP,
  year =         1997,
  pages =        "430--435",
  sponsors =     "MURST",
}

@InProceedings{Rosa97b,
  author =       "Riccardo Rosati",
  title =        "Complexity of Only Knowing: {T}he Propositional Case",
  booktitle =    LPNMR-97,
  key =          "nmr-deduct",
  editor =       SV,
  series =       LNAI,
  volume =       1265,
  year =         1997,
  pages =        "76--91",
}

@InProceedings{Rosa97c,
  author =       "Riccardo Rosati",
  title =        "Embedding Minimal Knowledge into Autoepistemic Logic",
  booktitle =    AI*IA-97,
  key =          "nmr-deduct",
  number =       1321,
  series =       LNAI,
  publisher =    SV,
  year =         1997,
  pages =        "231--241",
}

@InProceedings{Rosa98,
  author =       "Riccardo Rosati",
  title =        "Reducing Query Answering to Satisfiability in Nonmonotonic
                  Logics",
  booktitle =    AAAI-98,
  publisher =    AAAIP,
  year =         1998,
  pages =        "853--858",
}

@Article{Rosa98b,
  author =       "Riccardo Rosati",
  title =        "Autoepistemic Description Logics",
  journal =      AIC,
  volume =       11,
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  pages =        "219--221",
  year =         1998,
}

@InProceedings{Rosa99,
  author =       "Rosati, Riccardo",
  booktitle =    DL-99,
  pages =        "160--164",
  title =        "Towards Expressive {KR} Systems Integrating {D}atalog and
                  Description Logics: {P}reliminary Report",
  year =         1999,
  publisher =    "CEUR Electronic Workshop Proceedings,
                  http://ceur-ws.org/Vol-22/",
}

@InProceedings{Rose81,
  author =       "Stanley J. Rosenschein", 
  title =        "Plan Synthesis: {A} Logical Perspective",
  booktitle =    IJCAI-81,
  pages =        "331--337",
  year =         1981
}
                  
@Book{Rose82,
  author =       "Joseph G. Rosenstein",
  title =        "Linear Orderings",
  publisher =    AP,
  year =         1982,
  address =      "New York (USA)"
}

@InProceedings{Rous99,
  author =       "Marie-Christine Rousset",
  title =        "Backward Reasoning in {ABoxes} for Query Answering",
  booktitle =    DL-99,
  year =         1999,
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  publisher =    "CEUR Electronic Workshop Proceedings,
                  http://ceur-ws.org/Vol-22/",
}

@InProceedings{RoQu94,
  author =       "V. Royer and J. J. Quantz",
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@Article{RuSK91,
  author =       "M. Rusinkiewicz and A. Sheth and G. Karabatis",
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@InProceedings{Rych96,
  author =       "Nestor Rychtyckyj",
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  year =         1996,
  pages =        "588--596",
}

@InProceedings{Rych99,
  author =       "Nestor Rychtyckyj",
  title =        "{DLMS}: {T}en Years of {AI} for Vehicle Assembly Process
                  Planning",
  booktitle =    IAAI-99,
  year =         1999,
  pages =        "821--828",
}

%sssssssssssssssssssssssss
%sssssssssssssssssssssssss

@InProceedings{Safr88,
  author =       "Shmuel Safra",
  title =        "On the Complexity of $\omega$-Automata",
  booktitle =    FOCS-88,
  pages =        "319--327",
  year =         1988
}

@Article{SaYa80,
  author =       "Y. Sagiv and M. Yannakakis",
  title =        "Equivalences among Relational Expressions with the Union and
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  journal =      JACM,
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@InProceedings{SaSt90,
  author =       "Vieri Samek-Lodovici and Carlo Strapparava",
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                  {AlF}resco System",
  booktitle =    ECAI-90,
  pages =        "573--578",
  year =         1990,
}

@InCollection{SaSh95,
  author =       "Erik Sandewall and Yoav Shoham",
  title =        "Non-monotonic temporal reasoning",
  booktitle =    "Handbook of Logic in Artificial Intelligence and Logic
                  Programming",
  publisher =    "Oxford Science Publications",
  year =         "1995",
  volume =       "4",
  pages =        "439--498"
}                 

@Book{Sand94,
  author =       "Erik Sandewall",
  title =        "Features and Fluents: {T}he Representation of Knowledge about
                  Dynamical Systems",
  publisher =    CP,
  year =         1994,
  address =      "Oxford",
}

@InProceedings{SaVa89,
  author =       "Shmuel Safra and Moshe Y. Vardi",
  title =        "On $\omega$ Automata and Temporal Logic",
  booktitle =    STOC-89,
  year =         1989,
  pages =        "127--137"
}

@InProceedings{Salo92,
  author =       "Sandro Salomone",
  title =        "An {$O(n\log n)$} algorithm for Subsumption in
                  {${\cal FL^-}$}",
  booktitle =    "Proceedings of the Fourth Italian Conference on
                  Theoretical Computer Science",
  year =         "1992",
  month =        oct,
  publisher =    "World Scientific Publishing Co.",
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  editor =       "A. Marchetti Spaccamela and P. Mentrasti and M.
                  Venturini Zilli",
}

@InProceedings{Satt95,
  author =       "Ulrike Sattler",
  title =        "A Concept Language for an Engineering Application with
                  Part-Whole Relations",
  booktitle =    DL-95,
  year =         1995,
  pages =        "119--123",
}

@InProceedings{Satt96,
  author =       "Ulrike Sattler",
  title =        "A Concept Language Extended with Different Kinds of
                  Transitive Roles",
  booktitle =    KI-96,
  series =       LNAI,
  number =       1137,
  pages =	 "333--345",
  editor =       "G{\"unter} G{\"o}rz and Steffen H{\"o}lldobler",
  publisher =    SV,
  year =         1996,
}

@PhdThesis{Satt98,
  author =       "Ulrike Sattler",
  title =        "Terminological Knowledge Representation Systems in a Process
                  Engineering Application",
  school =       "LuFG Theoretical Computer Science, RWTH-Aachen, Germany",
  year =         1998,
}

@Article{Savi70,
  author =       "W. J. Savitch",
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  year =         1970
}

@InProceedings{Scha78,
  author =       "Thomas J. Schaefer",
  title =        "The Complexity of Satisfiability Problems",
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  pages =        "216--226",
  year =         1978,
}

@Article{Scha91,
  author =       "Andrea Schaerf",
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  volume =       "IV",
  number =       4,
  month =        dec,
  note =         "In italian"
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@Article{Scha93,
  author =       "Andrea Schaerf",
  title =        "On the Complexity of the Instance Checking Problem in
                 Concept Languages with Existential Quantification",
  journal =      JIIS,
  volume =       "2",
  year =         "1993",
  pages =        "265--278"
}

@InProceedings{Scha93b,
  author =       "Andrea Schaerf",
  title =        "Reasoning with Individuals in Concept Languages",
  year =         1993,
  booktitle =    AI*IA-93,
  publisher =    SV,
  series =       LNAI,
}

@TechReport{Scha93c,
  author =       "Andrea Schaerf",
  title =        "Reasoning with Individuals in Concept Languages",
  institution =  DIS,
  year =         1993,
  number =       "07.93",
  note =         "An abridged version appeared in \begingroup\em " # AI*IA-93
                 # "\endgroup",
}

@Article{Scha94,
  author =       "Andrea Schaerf",
  title =        "Reasoning with Individuals in Concept Languages",
  year =         1994,
  journal =      DKE,
  volume =       13,
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  author =       "Klaus Schild",
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%ttttttttttttttttttttttttt
%ttttttttttttttttttttttttt

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@InProceedings{TWFHM82,
  author =       "F. Tou and M. Williams and R. Fikes and A. Henderson and
                  T. Malone",
  title =        "{RABBIT}: {A}n intelligent database assistant",
  booktitle =    AAAI-82,
  year =         1982,
  pages =        "314--318",
}

@InProceedings{ToHT87,
  author =       "David S. Touretzky and John F. Horty and Richmond
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  title =        "A Clash of Intuitions: the Current State of Nonmonotonic
                  Multiple Inheritance Systems",
  booktitle =    IJCAI-87,
  year =         1987,
  pages =        "476--482",
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@InProceedings{ToTH91,
  author =       "David S. Touretzky and Richmond Thomason and Jeff Horty",
  title =        "A Skeptic's Menagerie: Conflictors,  Preemptors, Reinstaters,
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  booktitle =    IJCAI-91,
  year =         1991,
  pages =        "478--483"
}

@InProceedings{TrMo98,
  author =       "Christopher B. Tresp and Ralf Molitor",
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  booktitle =    ECAI-98,
  year =         1998,
}

@InProceedings{TrLN99,
  author =       "Stefano M. Trisolini and Maurizio Lenzerini and Daniele
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}

@Article{TsSI96,
  author =       "O. G. Tsatalos and M. H. Solomon and Y. E. Ioannidis",
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  number =       2,
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}

%uuuuuuuuuuuuuuuuuuuuuuuuu
%uuuuuuuuuuuuuuuuuuuuuuuuu

@Book{Ullm88,
  author =       "Jeffrey D. Ullman",
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@InProceedings{Ullm97,
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  year =         1997,
  series =       LNCS,
  publisher =    SV,
  volume =       1186,
}

%vvvvvvvvvvvvvvvvvvvvvvvvv
%vvvvvvvvvvvvvvvvvvvvvvvvv

@Article{Vali84,
  author =       "L. G. Valiant",
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@Book{VanD89,
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@Book{VanH89,
  author =       "Van Hentenryck, Pascal",
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@InProceedings{Vard82,
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  year =         1982,
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@InProceedings{Vard85,
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  booktitle =    "Proc.\ of the 4th Workshop on Logics of Programs",
  year =         1985,
  publisher =    SV
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@Article{Vard86,
  author =       "Moshe Y. Vardi",
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  volume =       33,
  pages =        "142--160",
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@InProceedings{Vard88,
  author =       "Moshe Y. Vardi",
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  pages =        "250--259",
  booktitle =    POPL-88,
  year =         1988,
  address =      "San Diego (CA, USA)"
}

@Article{Vard89,
  author =       "Moshe Y. Vardi",
  title =        "A Note on the Reduction of Two-Way Automata to One-Way
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  year =         1989
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@InProceedings{Vard95,
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  volume =       939,
  year =         1995,
  publisher =    SV,
  pages =        "267--292",
}

@InCollection{Vard96,
  author =       "Moshe Y. Vardi",
  title =        "An Automata-Theoretic Approach to Linear Temporal Logic",
  booktitle =    "Logics for Concurrency: {S}tructure versus Automata",
  editor =       "Faron Moller and Graham Birtwistle",
  series =       LNCS,
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  year =         1996,
}

@InProceedings{Vard97,
  author =       "Moshe Y. Vardi",
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  volume =       31,
  year =         1997,
  publisher =    "American Mathematical Society",
  pages =        "149--184"
}

@InProceedings{Vard98,
  author =       "Moshe Y. Vardi",
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  booktitle =    ICALP-98,
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  volume =       1443,
  publisher =    SV,
  year =         1998,
  pages =        "628--641",
}

@InProceedings{VaSt85,
  author =       "Moshe Y. Vardi and Larry Stockmeyer",
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  pages =        "240--251",
  booktitle =    STOC-85,
  year =         1985
}

@InProceedings{VaWo84,
  author =       "Moshe Y. Vardi and Pierre Wolper",
  title =        "Automata-theoretic Techniques for Modal Logics of
                 Programs",
  booktitle =    STOC-84,
  year =         "1984",
  pages =        "446--455",
}

@Article{VaWo86,
  author =       "Moshe Y. Vardi and Pierre Wolper",
  title =        "Automata-theoretic Techniques for Modal Logics of
                 Programs",
  journal =      JCSS,
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  pages =        "183--221",
  volume =       32,
  note =         "A preliminary version appeared in {\it Proc.\ of the
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@Article{VaWo94,
  author =       "Moshe Y. Vardi and Pierre Wolper",
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  year =         1994,
}

@InProceedings{Vian01,
  author =       "Victor Vianu",
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  year =         2001,
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}

@InProceedings{ViWi94,
  author =       "Vania M. Vidal and Marianne Winslett",
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  pages =        "263--271"
}

@InProceedings{Vila91,
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                 {KL-ONE} Framework",
  booktitle =    AAAI-91,
  year =         1991,
  pages =        "464--470",
}

%wwwwwwwwwwwwwwwwwwwwwwwww
%wwwwwwwwwwwwwwwwwwwwwwwww

@Book{Wahl00,
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@Article{WAFPR93,
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  year =         1993,
  journal =      AIJ,
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  pages =        "387--428"
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@Book{Wand80,
  author =       "Mitchell Wand",
  title =        "Induction, Recursion, and Programming",
  publisher =    NH,
  year =         1980,
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@InCollection{Wang63,
  author =       "H. Wang",
  title =        "Dominoes and the {$\forall\exists\forall$} Case of the
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  year =         1963,
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@InProceedings{WeLi92,
  author =       "Robert Weida and Diane Litman",
  title =        "Terminological Reasoning with Constraint Networks and
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  booktitle =    KR-92,
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@InProceedings{Weis89,
  author =       "R. M. Weischedel",
  title =        "A Hybrid Approach to Representation in the {J}anus Natural
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  booktitle =    "Proc.\ of the 27th Annual Meeting of the Association for
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  year =         1989,
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@InProceedings{WeEt94,
  author =       "Daniel S. Weld and Oren Etzioni",
  title =        "The First Law of Robotics ({A} Call to Arms)",
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  pages =        "1042--1047"
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@PhdThesis{Welt95,
  author =       "Christopher Welty",
  title =        "An Integrated Representation for Software Development and
                  Discovery",
  year =         1995,
  school =       "Rensselaer Polytechnic Institute",
}

@InProceedings{Welt96,
  author =       "Christopher Welty",
  title =        "An {HTML} interface for {C}lassic",
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  series =       "AAAI Technical Report",
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  publisher =    AAAIP,
  year =         1996,
}

@InProceedings{Welt97,
  author =       "Christopher Welty",
  title =        "Augmenting Abstract Syntax Trees for Program Understanding",
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  year =         1997,
  publisher =    IEEEP,
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@InProceedings{Werm95,
  author =       "Michel Wermelinger",
  title =        "Conceptual Graphs and First-Order Logic",
  booktitle =    ICCS-95,
  pages =        "323--337",
  year =         1995,
  editor =       "Gerard Ellis and Robert Levinson and William Rich and John
                  F. Sowa",
  series =       LNAI,
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  publisher =    SV,
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@Article{Wied92,
  author =       "Gio Wiederhold",
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  journal =      COMPUTER,
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  year =         1992,
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@TechReport{WGLZ*96,
  author =       "Janet L. Wiener and Himanshu Gupta and Wilburt J. Labio and
                  Yue Zhuge and Hector Garcia-Molina and Jennifer Widom",
  title =        "A System Prototype for Warehouse View Maintenance",
  institution =  "Stanford University",
  year =         1996,
  note =         "Available at
                  http://www-db-stanford.edu/warehousing/warehouse.html"
}

@InProceedings{Wido95,
  author =       "Jennifer Widom",
  title =        "Research Problems in Data Warehousing",
  booktitle =    CIKM-95,
  year =         1995
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@Article{WiSe98,
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  pages =        "1791--1806",
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@Article{Wolp83,
  author =       "Pierre Wolper",
  title =        "Temporal Logic can be More Expressive",
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@Article{Wolt00,
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@InProceedings{WoZa98,
  author =       "Frank Wolter and Michael Zakharyaschev",
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  publisher =    "CSLI Publications",
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@InProceedings{WoZa98b,
  author =       "Frank Wolter and Michael Zakharyaschev",
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  pages =        "512--523",
  booktitle =    KR-98,
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@InProceedings{WoZa98c,
  author =       "Frank Wolter and Michael Zakharyaschev",
  title =        "Temporalizing Description Logics",
  year =         1999,
  booktitle =    FroCoS-98,
  address =      "Amsterdam",
  editor =       "M. de Rijke and D. Gabbay",
  publisher =    "Wiley",
}

@InCollection{WoZa99,
  author =       "Frank Wolter and Michael Zakharyaschev",
  title =        "Temporalizing Description Logic",
  year =         1999,
  booktitle =    "Frontiers of Combining Systems",
  editor =       "D. Gabbay and M. de Rijke",
  publisher =    "Studies Press/Wiley",
  pages =        "379 - 402",
}

@InProceedings{WoZa99b,
  author =       "Frank Wolter and Michael Zakharyaschev",
  title =        "Multi-Dimensional Description Logics",
  booktitle =    IJCAI-99,
  pages =        "104--109",
  year =         1999,
}

@Article{WoZa99c,
  author =       "Frank Wolter and Michael Zakharyaschev",
  title =        "Modal Description Logics: {M}odalizing Roles",
  journal =      FUND-INF,
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@InCollection{Wood95,
  author =       "Derick Wood",
  title =        "{S}tandard {G}eneralized {M}arkup {L}anguage: {M}athematical
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@InCollection{Wood75,
  author =       "William A. Woods",
  title =        "What's in a Link: Foundations for Semantic Networks",
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  year =         1975,
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  editor =       "D. G. Bobrow and A. M. Collins",
  publisher =    AP,
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@InCollection{Wood91,
  author =       "William A. Woods",
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  year =         1991,
  pages =        "45--94",
  editor =       "J. F. Sowa",
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@TechReport{WoSc90,
  author =       "William A. Woods and James G. Schmolze",
  title =        "The {KL-ONE} Family",
  institution =  "Aiken Computation Laboratory, Harvard University",
  address =      "Cambridge (MA, USA)",
  year =         1990,
  number =       "TR-20-90",
  note =         "Published in a special issue of {\it Computers \& Mathematics
                  with Applications}, Volume 23, Number 2--9.",
}

@InCollection{WoSc92,
  author =       "William A. Woods and James G. Schmolze",
  title =        "The {KL-ONE} Family",
  booktitle =    "Semantic Networks in Artificial Intelligence",
  year =         1992,
  editor =       "F. W. Lehmann",
  pages =        "133--178",
  publisher =    PP,
  note =         "Published as a special issue of {\it Computers \& Mathematics
                  with Applications}, Volume 23, Number 2--9.",
}

@Article{WWVB*93,
  author =       "Jon R. Wright and Elia S. Weixelbaum and Gregg T.
                 Vesonder and Karen E. Brown and Stephen R. Palmer and
                 Jay I. Berman and Harry H. Moore",
  title =        "A Knowledge-Based Configurator that Supports Sales,
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                 Systems",
  year =         1993,
  journal =      AIM,
  volume =       14,
  number =       3,
  pages =        "69--80",
}

%xxxxxxxxxxxxxxxxxxxxxxxxx
%xxxxxxxxxxxxxxxxxxxxxxxxx

%% use BrPS98 instead
TechReport{XML-W3C98,
  title =        "Extensible {M}arkup {L}anguage {(XML)} 1.0 --- {W3C}
                  Recommendation",
  author =       "Tim Bray and Jean Paoli and C. M. Sperberg-McQueen",
  institution =  "World Wide Web Consortium",
  year =         1998,
  note =         "Available at http://www.w3.org/TR/1998/REC-xml-19980210"
}

%yyyyyyyyyyyyyyyyyyyyyyyyy
%yyyyyyyyyyyyyyyyyyyyyyyyy

@InProceedings{YaKL97,
  author =       "Jian Yang and Kamalakar Karlapalem and Qing Li",
  title =        "Algorithms for Materialized View Design in Data Warehousing
                  Environment",
  booktitle =    VLDB-97,
  pages =        "136-145",
  year =         1997,
}

@InProceedings{YaOz99,
  author =       "Ling-Ling Yan and M. Tamer {\"O}zsu",
  title =        "Conflict Tolerant Queries in {AURORA}",
  booktitle =    CoopIS-99,
  pages =        "279--290",
  year =         1999,
}

@InProceedings{Yann81,
  author =       "Mihalis Yannakakis",
  title =        "Algorithms for Acyclic Database Schemes",
  booktitle =    VLDB-81,
  pages =        "82--94",
  year =         1981,
}

@InProceedings{YePS94,
  author =       "Xian Ye and Christine Parent and Stefano Spaccapietra",
  title =        "Cardinality Consistency of Derived Objects in {DOOD}
                  Systems",
  booktitle =    ER-94,
  address =      "Manchester (United Kingdom)",
  year =         1994,
  editor =       "P. Loucopoulos",
  pages =        "278--295",
  publisher =    SV,
  series =       LNCS,
  volume =       881
}

@InProceedings{Yell00,
  author =       "Philip Y. Yelland",
  title =        "An Alternative Combination of {B}aysian Networks and
                  Description Logics",
  booktitle =    KR-00,
  pages =        "225--234",
  year =         2000,
}

@InProceedings{Yen91,
  author =       "John Yen",
  title =        "Generalizing Term Subsumption Languages to Fuzzy
                 Logic",
  pages =        "472--477",
  editor =       "Ray Reiter and John Myopoulos",
  booktitle =    IJCAI-91,
  year =         "1991",
}

@Article{YeNM91,
  author =       "John Yen and Robert Neches and Robert MacGregor",
  title =        "{CLASP}: Integrating Term Subsumption Systems and
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  year =         1991,
  journal =      TKDE,
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  number =       1,
  pages =        "25--31",
}

@InProceedings{YLGU99,
  author =       "Ramana Yerneni and Chen Li and Hector Garcia-Molina and
                  Jeffrey D. Ullman",
  title =        "Computing Capabilities of Mediators",
  booktitle =    SIGMOD,
  pages =        "443--454",
  year =         1999,
}

@InProceedings{YLUG99,
  author =       "Ramana Yerneni and Chen Li and Jeffrey D. Ullman and Hector
                  Garcia-Molina",
  title =        "Optimizing Large Join Queries in Mediation Systems",
  booktitle =    ICDT-99,
  pages =        "348--364",
  year =         1999,
}

%zzzzzzzzzzzzzzzzzzzzzzzzz
%zzzzzzzzzzzzzzzzzzzzzzzzz

@InProceedings{Zhan97,
  author =       "Zhang, Hantao",
  title =        "{SATO}: an Efficient Propositional Prover",
  booktitle =    CADE-97,
  series =       LNCS,
  year =         1997,
}

@InProceedings{ZhOz95,
  author =       "Xubo Zhang and Z. Meral Ozsoyoglu",
  title =        "On efficient Reasoning with Implication Constraints",
  booktitle =    DOOD-93,
  volume =       760,
  series =       LNCS,
  year =         1993,
  publisher =    SV,
  pages =        "236--252"
}

@Article{ZhHK96,
  author =       "Gang Zhou and Richard Hull and Roger King",
  title =        "Generating Data Integration Mediators that 
                  Use Materializations",
  journal =      JIIS,
  year =         1996,
  volume =       6,
  pages =        "199--221"
}
                  
@InProceedings{ZHKF95,
  author =       "Gang Zhou and Richard Hull and Roger King and Jean-Claude
                  Franchitti", 
  title =        "Using Object Matching and Materialization to
                  Integrate Heterogeneous Databases",
  booktitle =    CoopIS-95,
  year =         1995,
  pages =        "4--18"
}                 

@Article{ZHKF95b,
  author =       "Gang Zhou and Richard Hull and Roger King and Jean-Claude
                  Franchitti", 
  title =        "Data Integration and Warehousing Using {H20}",
  journal =      IEEEBDE,
  year =         1995,
  volume =       18,
  number =       2,
  pages =        "29--40"
}

@InProceedings{ZGHW95,
  author =       "Yue Zhuge and Hector Garcia-Molina and Joachim Hammer and
                  Jennifer Widom",
  title =        "View Maintenance in a Warehousing Environment",
  booktitle =    SIGMOD,
  year =         1995,
  pages =        "316--327"
}

%%% Proceedings Proceedings Proceedings Proceedings Proceedings Proceedings
%%% Proceedings Proceedings Proceedings Proceedings Proceedings Proceedings

@Proceedings{BLNN95,
  editor =       "Alexander Borgida and Maurizio Lenzerini and Daniele Nardi
                  and Bernhard Nebel",
  title =        DL-95,
  booktitle =    DL-95,
  year =         1995,
  address =      "Rome (Italy)",
  series =       "Technical Report, RAP 07.95, " # DIS,
}

%%% previously also AAAIWIG95
@Proceedings{KnLe95,
  editor =       "Craig Knoblock and Alon Y. Levy",
  title =        "Proc.\ of the {AAAI'95} Spring Symp.\ on Information
                  Gathering from Heterogeneous, Distributed Environments",
  booktitle =    "Proc.\ of the {AAAI'95} Spring Symp.\ on Information
                  Gathering from Heterogeneous, Distributed Environments",
  year =         1995,
  series =       "AAAI Spring Symposium Series",
  number =       "SS-95-08",
  publisher =    AAAIP,
}

@Proceedings{FKKR99,
  editor =       "Dieter Fensel and Craig Knoblock and Nicholas Kushmerick and
                  Marie-Christine Rousset",
  title =        "Proc.\ of the {IJCAI'99} Workshop on Intelligent Information
                  Integration",
  booktitle =    "Proc.\ of the {IJCAI'99} Workshop on Intelligent Information
                  Integration",
  year =         1999,
  publisher =    "CEUR Electronic Workshop Proceedings,
                  http://ceur-ws.org/Vol-23/",
}

%%% Collections Collections Collections Collections Collections Collections
%%% Collections Collections Collections Collections Collections Collections

@Proceedings{BLNP94,
  editor =       "Franz Baader and Maurizio Lenzerini and Werner Nutt and 
                  Patel-Schneider, Peter F.",
  title =        DL-94,
  year =         1994,
  publisher =    DFKI,
  number =       "D-94-10",     
}

@Book{BrLe85,
  editor =       "Ronald J. Brachman and Hector J. Levesque",
  title =        "Readings in Knowledge Representation",
  booktitle =    "Readings in Knowledge Representation",
  publisher =    MK,
  year =         1985,
}

@Book{BoLe01,
  editor =       "Mokrane Bouzeghoub and Maurizio Lenzerini",
  title =        IS # " -- Special Issue on Data Extraction, Cleaning, and
                  Reconciliation",
  booktitle =    IS # " -- Special Issue on Data Extraction, Cleaning, and
                  Reconciliation",
  year =         2001,
  note =         "To appear",
}

@Book{DaFM98,
  editor =       "Tim Darr and Mark Fox and Deborah McGuinness",
  title =        "Artificial Intelligence for Engineering Design, Analysis, and
                  Manufacturing J.\ -- Special Issue on Configuration",
  year =         1998,
  publisher =    CUP,
}

@Book{HeRo91,
  editor =       "O. Herzog and C. R. Rollinger",
  title =        "Text Understanding in {LILOG}",
  booktitle =    "Text Understanding in {LILOG}",
  publisher =    SV,
  year =         1991,
}

@Proceedings{LiMV95,
  editor =       "Tok Wang Ling and Alberto O. Mendelzon and Laurent Vieille",
  title =        DOOD-95,
  year =         1995,
  publisher =    SV,
  series =       LNCS,
  volume =       1013,            
}

@Proceedings{MMMR92,
  editor =       "Robert Mac{G}regor and Deborah Mc{G}uinness and Eric Mays and
                  Tom Russ",
  title =        "Working Notes of the AAAI Fall Symposium on ``Issues on
                  Description Logics: Users meet Developers''",
  year =         1992,
  address =      "Boston, MA (USA)",
}

@Proceedings{NePV91,
  editor =       "Bernhard Nebel and Christof Peltason and Kai von Luck",
  title =        "Proc.\ of the Int.\ Workshop on Terminological Logics",
  publisher =    DFKI,
  year =         "1991",
  number =       "D-91-13",
}

%%% previously IEEEBDE95
@Book{Wido95b,
  editor =       "Jennifer Widom",
  title =        IEEEBDE # " -- Special Issue on Materialized Views and Data
                  Warehousing",
  booktitle =    IEEEBDE # " -- Special Issue on Materialized Views and Data
                  Warehousing",
  publisher =    IEEEP,
  year =         1995,
  volume =       18,
  number =       2,
}

@Book{Wido99,
  editor =       "Jennifer Widom",
  title =        IEEEBDE # " -- Special Issue on Materialized Views and Data
                  Warehousing",
  booktitle =    IEEEBDE # " -- Special Issue on Materialized Views and Data
                  Warehousing",
  publisher =    IEEEP,
  year =         1999,
  volume =       22,
  number =       3,
}

%%% previously JIIS96
@Book{Wied96,
  editor =       "Gio Wiederhold",
  title =        JIIS # " -- Special Issue: {I}ntelligent Integration of
                  Information",
  booktitle =    JIIS # " -- Special Issue: {I}ntelligent Integration of
                  Information",
  year =         1996,
  volume =       6,
  number =       "2/3",
}

@Book{Leuv90,
  editor =       "J. van Leuven",
  title =        "Handbook of Theoretical Computer Science",
  booktitle =    "Handbook of Theoretical Computer Science",
  publisher =    ESP,
  year =         1990
}

@Book{DWQ99,
  title =        "The Data Warehouse Quality Project",
  year =         1999,
  address =      "http://www.dbnet.ece.ntua.gr/$\sim$dwq/"
}



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