@inproceedings{LATA-2012-Hovland,
	author        = "Dag Hovland",
	booktitle     = "{Proceedings of the Sixth International Conference on Language and Automata Theory and Applications}",
	doi           = "10.1007/978-3-642-28332-1_27",
	isbn          = "978-3-642-28331-4",
	pages         = "313--324",
	publisher     = "{Springer International Publishing}",
	series        = "{Lecture Notes in Computer Science}",
	title         = "{The Membership Problem for Regular Expressions with Unordered Concatenation and Numerical Constraints}",
	volume        = 7183,
	year          = 2012,
}