@inproceedings{JICSLP-1996-CostantiniLM,
	author        = "Stefania Costantini and Gaetano Aurelio Lanzarone and Giuseppe Magliocco",
	booktitle     = "{Proceedings of the Joint International 13th Conference and Symposium on Logic Programming}",
	isbn          = "0-262-63173-3",
	pages         = "438--452",
	publisher     = "{MIT Press}",
	title         = "{Asserting Lemmas in the Stable Model Semantics}",
	year          = 1996,
}