@inproceedings{ICLP-2008-Niemela,
	author        = "Ilkka Niemelä",
	booktitle     = "{Proceedings of the 24th International Conference on Logic Programming}",
	doi           = "10.1007/978-3-540-89982-2_15",
	isbn          = "978-3-540-89981-5",
	pages         = "88--92",
	publisher     = "{Springer International Publishing}",
	series        = "{Lecture Notes in Computer Science}",
	title         = "{Answer Set Programming without Unstratified Negation}",
	volume        = 5366,
	year          = 2008,
}