@inproceedings{PODS-1996-RajaramanU,
	author        = "Anand Rajaraman and Jeffrey D. Ullman",
	booktitle     = "{Proceedings of the 15th Symposium on Principles of Database Systems}",
	doi           = "10.1145/237661.237717",
	isbn          = "0-89791-781-2",
	pages         = "238--248",
	publisher     = "{ACM Press}",
	title         = "{Integrating Information by Outerjoins and Full Disjunctions}",
	year          = 1996,
}