Yoram Hirshfeld. Petri Nets and the Equivalence Problem. In Egon Börger, Yuri Gurevich, Karl Meinke, editors, Computer Science Logic, 7th Workshop, CSL 93, Swansea, United Kingdom, September 13-17, 1993, Selected Papers. Volume 832 of Lecture Notes in Computer Science, pages 165-174, Springer, 1993.
Abstract is missing.