@inproceedings{QAPL-2011-AmanC,
	author        = "Bogdan Aman and Gabriel Ciobanu",
	booktitle     = "{Proceedings of the Ninth Workshop on Quantitative Aspects of Programming Languages}",
	doi           = "10.4204/EPTCS.57.4",
	pages         = "47--60",
	series        = "{EPTCS}",
	title         = "{Time Delays in Membrane Systems and Petri Nets}",
	volume        = 57,
	year          = 2011,
}