@inproceedings{ILPS-1995-DimopoulosK,
	author        = "Yannis Dimopoulos and Antonis C. Kakas",
	booktitle     = "{Proceedings of the International Symposium on Logic Programming}",
	isbn          = "0-262-62099-5",
	pages         = "369--383",
	publisher     = "{MIT Press}",
	title         = "{Logic Programming without Negation as Failure}",
	year          = 1995,
}