SOFSEM '97: Theory and Practice of Informatics 24th Seminar on Current Trends in Theory and Practice of Informatics, Milovy, Czech Republic, November 22-29, 1997. Proceedings - Plasil, Frantisek; Plasil, Frantisek; Jeffery, Keith G.; Jeffery, Keith G. (Springer Berlin Heidelberg : Imprint: Springer, 1997)