@inbook {365,
	title = {On the Computation of Structural Synchronic Invariants in P/T Nets},
	booktitle = {Advances in Petri Nets 1988},
	series = {Lecture Notes in Computer Science},
	number = {340},
	year = {1988},
	pages = {386-417},
	publisher = {Springer-Verlag},
	organization = {Springer-Verlag},
	address = {Berlin},
	isbn = {3-540-50580-6},
	author = {M. Silva and J.M. Colom},
	editor = {G. Rozenberg}
}

