Lucia Pomello, Carla Simone. A state transformation preorder over a class of EN systems. In Grzegorz Rozenberg, editor, Advances in Petri Nets 1990 [10th International Conference on Applications and Theory of Petri Nets, Bonn, Germany, June 1989, Proceedings]. Volume 483 of Lecture Notes in Computer Science, pages 436-456, Springer, 1989.
Abstract is missing.