@inbook {1358, title = {Improving the linearly based characterization of P/T nets}, booktitle = {Proceedings of Design Methods Based on Nets (DEMON). Esprit Basic Research Action 3148. W.G. 3: Algebra and Proof Methods. Deliverables Covering the Period June 1989 to June 1990}, year = {1990}, month = {06/1990}, address = {Paris, Frances}, author = {J.M. Colom and M. Silva} }