@inproceedings{ICLP-1997-Petukhin,
	author        = "Vyacheslav Petukhin",
	booktitle     = "{Proceedings of the 14th International Conference on Logic Programming}",
	isbn          = "0-262-64035-X",
	pages         = "420",
	publisher     = "{MIT Press}",
	title         = "{Embedded Implications as a Generalization of Negation as Failure}",
	year          = 1997,
}