@inproceedings{POPL-2011-HengleinN,
	author        = "Fritz Henglein and Lasse Nielsen",
	booktitle     = "{Proceedings of the 38th Symposium on Principles of Programming Languages}",
	doi           = "10.1145/1926385.1926429",
	editor        = "Thomas Ball and Mooly Sagiv",
	isbn          = "978-1-4503-0490-0",
	pages         = "385--398",
	publisher     = "{ACM}",
	title         = "{Regular expression containment: coinductive axiomatization and computational interpretation}",
	year          = 2011,
}