@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}
}

