@inproceedings{FoSSaCS-2009-KupfermanP,
	author        = "Orna Kupferman and Nir Piterman",
	booktitle     = "{Proceedings of the 12th International Conference on Foundations of Software Science and Computation Structures}",
	doi           = "10.1007/978-3-642-00596-1_14",
	isbn          = "978-3-642-00595-4",
	pages         = "182--196",
	publisher     = "{Springer International Publishing}",
	series        = "{Lecture Notes in Computer Science}",
	title         = "{Lower Bounds on Witnesses for Nonemptiness of Universal Co-Büchi Automata}",
	volume        = 5504,
	year          = 2009,
}