@inproceedings{VLDB-1992-GadiaNP,
	author        = "Shashi K. Gadia and Sunil S. Nair and Yiu-Cheong Poon",
	booktitle     = "{Proceedings of the 18th International Conference on Very Large Data Bases}",
	ee            = "http://www.vldb.org/conf/1992/P395.PDF",
	isbn          = "1-55860-151-1",
	pages         = "395--406",
	publisher     = "{Morgan Kaufmann}",
	title         = "{Incomplete Information in Relational Temporal Databases}",
	year          = 1992,
}