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P. Crescenzi, C. Demetrescu, I. Finocchi, and R. Petreschi: Reversible execution and visualization of programs with Leonardo, Journal of Visual Languages and Computing (JVLC), 11(2), pp. 125-150, Academic Press, April 2000 [download ps.gz, 465 KB]. An extended abstract appears in Proceedings of the 1st Workshop on Algorithm Engineering (WAE'97), G.F. Italiano and S. Orlando Editors, pp. 146-155, Venice, Italy, September 1997 [download ps.gz, 648 KB].

C. Demetrescu and I. Finocchi: Smooth animation of algorithms in a declarative framework, Journal of Visual Languages and Computing (JVLC), 12(3), Special Issue devoted to selected papers from the 15th IEEE Symposium on Visual Languages, Academic Press, 2001 [download ps.gz, 448 KB]. An extended abstract appears in Proceedings of the 15th IEEE Symposium on Visual Languages (VL'99), IEEE Computer Society Press, pp. 280-287, Tokyo, Japan, September 1999 [download ps.gz, 154 KB] [abstract].

C. Demetrescu and I. Finocchi: A technique for generating graphical abstractions of program data structures, Proceedings of the 3rd International Conference on Visual Information Systems (Visual'99), LNCS 1614, pp. 785-792, Amsterdam, The Netherlands, June 1999 [download ps.gz, 99 KB] [abstract].

C. Demetrescu and I. Finocchi: A general-purpose logic-based visualization framework, Proceedings of the 7th International Conference in Central Europe on Computer Graphics, Visualization and Interactive Digital Media (WSCG'99), pp. 55-62, Plzen, Czech Republic, February 1999 [download ps.gz, 213 KB] [abstract].

User manual
C. Demetrescu, I. Finocchi: The Leonardo User Manual (last updated June 14, 2001) Online version
StuffIt+MacBinary II, ftp, 674K
tar+gzip, ftp, 620K

C. Demetrescu, I. Finocchi: Fun with Leonardo, invited talk, Dagstuhl Seminar 01211 on Software Visualization, May 2001 [download PowerPoint presentation, 252 KB].