@inproceedings{JICSLP-1992-DongL,
	author        = "Fangqing Dong and Laks V. S. Lakshmanan",
	booktitle     = "{Proceedings of the Joint International Ninth Conference and Symposium on Logic Programming}",
	isbn          = "0-262-51064-2",
	pages         = "303--317",
	publisher     = "{MIT Press}",
	title         = "{Deductive Databases with Incomplete Information}",
	year          = 1992,
}