@inproceedings{DLT-2009-BrzozowskiGS,
	author        = "Janusz A. Brzozowski and Elyot Grant and Jeffrey Shallit",
	booktitle     = "{Proceedings of the 13th International Conference on Developments in Language Theory}",
	doi           = "10.1007/978-3-642-02737-6_10",
	isbn          = "978-3-642-02736-9",
	pages         = "125--144",
	publisher     = "{Springer International Publishing}",
	series        = "{Lecture Notes in Computer Science}",
	title         = "{Closures in Formal Languages and Kuratowski’s Theorem}",
	volume        = 5583,
	year          = 2009,
}