@inproceedings{ILPS-1993-LifschitzMT,
	author        = "Vladimir Lifschitz and Norman McCain and Hudson Turner",
	booktitle     = "{Proceedings of the International Symposium on Logic Programming}",
	isbn          = "0-262-63152-0",
	pages         = "641",
	publisher     = "{MIT Press}",
	title         = "{Automated Reasoning About Actions: A Logic Programming Approach}",
	year          = 1993,
}