@article {204,
	title = {Choice-free Petri Nets: A Model for Deterministic Concurrent Systems with Bulk Services and Arrivals},
	journal = {IEEE Transactions on Systems, Man and Cybernetics. Part A: Systems and Humans},
	volume = {27},
	year = {1997},
	month = {01/1997},
	pages = {73-83},
	issn = {1083-4427},
	author = {E. Teruel and J.M. Colom and M. Silva}
}

