@book {CS-LNCS-92,
	title = {Structural Techniques and Performance Bounds of Stochastic Petri Net Models},
	volume = {609},
	year = {1992},
	pages = {352-391},
	publisher = {Springer Verlag},
	organization = {Springer Verlag},
	author = {J. Campos and M. Silva},
	editor = {G. Rozenberg}
}

