Mathematical Foundations of Computer Science 1998 23rd International Symposium, MFCS'98, Brno, Czech Republic, August 24-28, 1998 - Brim, Lubos; Brim, Lubos; Gruska, Josef; Gruska, Josef; Zlatuska, Jiri; Zlatuska, Jiri (Springer Berlin Heidelberg : Imprint: Springer, 1998)