@inproceedings{ICALP-v2-2010-HabermehlMW,
	author        = "Peter Habermehl and Roland Meyer and Harro Wimmel",
	booktitle     = "{Proceedings of the 37th International Colloquium on Automata, Languages and Programming, Part II}",
	doi           = "10.1007/978-3-642-14162-1_39",
	isbn          = "978-3-642-14161-4",
	pages         = "466--477",
	publisher     = "{Springer International Publishing}",
	series        = "{Lecture Notes in Computer Science}",
	title         = "{The Downward-Closure of Petri Net Languages}",
	volume        = 6199,
	year          = 2010,
}