id	author	title	date	pages	extension	mime	words	sentence	flesch	summary	cache	txt
ajis02-412	Benwell, George; MacDonell, Stephen	Assessing the Graphical and Algorithmic Structure of Hierarchical Coloured Petri Net Models	1994	12	.pdf	application/pdf	5609	273	61	So Petri nets can be now described in the following manner (Purvis and Purvis, 1993); • a net structure, which is just like that of ordinary Petri nets, September 1994 17 • a set of data declarations, and • a set of net inscriptions. INTRODUCTION TO PETRI NETS Since the 1960s when Petri nets were first devised (Petri, 1962) they have been modified and advanced.	cache/ajis02-412.pdf	txt/ajis02-412.txt