Volume 9, 1997
Bologna, Italy, July 11-12, 1997
Faron Moller: Preface. 1
Felice Balarin: Verifying invariants by approximate image computation. 2-14
Zakaria Bouziane, Alain Finkel: Cyclic Petri net reachability sets are semi-linear effectively constructible. 15-24
Olaf Burkart: Model checking rationally restricted right closures of recognizable graphs. 25
Alain Finkel, Bernard Willems, Pierre Wolper: A direct symbolic approach to model checking pushdown systems. 27-37


Géraud Sénizergues: L(A) = L(B)? 43
Jitka Stríbrná: Decidability of strong bisimulation of basic parallel processes using Hilbert's basis theorem. 44



