@inproceedings{ILPS-1994-Malfon,
	author        = "Bernard Malfon",
	booktitle     = "{Proceedings of the International Symposium on Logic Programming}",
	isbn          = "0-262-52191-1",
	pages         = "91--105",
	publisher     = "{MIT Press}",
	title         = "{Characterization of Some Semantics for Logic Programs with Negation and Applications to Program Validation}",
	year          = 1994,
}