@inproceedings{VLDB-1985-AbiteboulG,
	author        = "Serge Abiteboul and Gösta Grahne",
	booktitle     = "{Proceedings of the 11th International Conference on Very Large Data Bases}",
	ee            = "http://www.vldb.org/conf/1985/P001.PDF",
	pages         = "1--12",
	publisher     = "{Morgan Kaufmann}",
	title         = "{Update Semantics for Incomplete Databases}",
	year          = 1985,
}