@inproceedings{ICLP-1991-CasanovaHG,
	author        = "Marco A. Casanova and Andrea S. Hemerly and Ramiro A. de T. Guerreiro",
	booktitle     = "{Proceedings of the Eighth International Conference on Logic Programming}",
	isbn          = "0-262-56058-5",
	pages         = "18--31",
	publisher     = "{MIT Press}",
	title         = "{Explaining SLDNF Resolution with Non-Normal Defaults}",
	year          = 1991,
}