@inproceedings{LATA-2009-HanSY,
	author        = "Yo-Sub Han and Kai Salomaa and Sheng Yu",
	booktitle     = "{Proceedings of the Third International Conference on Language and Automata Theory and Applications}",
	doi           = "10.1007/978-3-642-00982-2_34",
	isbn          = "978-3-642-00981-5",
	pages         = "398--409",
	publisher     = "{Springer International Publishing}",
	series        = "{Lecture Notes in Computer Science}",
	title         = "{State Complexity of Combined Operations for Prefix-Free Regular Languages}",
	volume        = 5457,
	year          = 2009,
}