Michal Chytil Ladislav Janiga Václav Koubek Mathematical Foundations of Computer Science 1988, MFCS'88, Carlsbad, Czechoslovakia, August 29 - September 2, 1988, Proceedings MFCS Lecture Notes in Computer Science 324 Springer 1988 db/conf/mfcs/mfcs88.html 3-540-50110-X