\bib{2002/diks}
\yr 2002
\editor Krzysztof Diks
\editor Wojciech Ritter
\book Mathematical foundations of computer science 2002: 27th international symposium, MFCS 2002, Warsaw, Poland, 26--30.08.2002: proceedings
\series Lecture Notes in Computer Science
\seriesvol 2420
\publ Springer-Verlag
\publaddr Berlin
\endref