@inproceedings{JICSCP-1988-FittingB88,
	author        = "Melvin Fitting and Marion Ben-Jacob",
	booktitle     = "{Proceedings of the Joint International Fifth Conference and Symposium on Logic Programming, 2 Volumes}",
	isbn          = "0-262-61056-6",
	pages         = "1054--1069",
	publisher     = "{MIT Press}",
	title         = "{Stratified and Three-valued Logic Programming Semantics}",
	year          = 1988,
}