@inproceedings{KR-1991-GabbayLV,
	author        = "Dov M. Gabbay and Els Laenens and Dirk Vermeir",
	booktitle     = "{Proceedings of the Second International Conference on Principles of Knowledge Representation and Reasoning}",
	isbn          = "1-55860-165-1",
	pages         = "208--217",
	publisher     = "{Morgan Kaufmann}",
	title         = "{Credulous vs. Sceptical Semantics for Ordered Logic Programs}",
	year          = 1991,
}