@inproceedings{ICLP-1991-Lever,
	author        = "Jonathan M. Lever",
	booktitle     = "{Proceedings of the Eighth International Conference on Logic Programming}",
	isbn          = "0-262-56058-5",
	pages         = "614--628",
	publisher     = "{MIT Press}",
	title         = "{Proving Program Properties by Means of SLS-Resolution}",
	year          = 1991,
}