@book {RP-89-18,
	title = {Merging Artificial Intelligence Techniques and Petri nets for Time Scheduling and Control of Production Systems},
	year = {1989},
	pages = {141-144},
	author = {J.L. Villarroel and J. Mart{\'\i}nez and P. Muro and M. Silva and S.F. Smith},
	editor = {Bredvel}
}

