@inproceedings{PODS-1994-EiterGM,
	author        = "Thomas Eiter and Georg Gottlob and Heikki Mannila",
	booktitle     = "{Proceedings of the 13th Symposium on Principles of Database Systems}",
	doi           = "10.1145/182591.182639",
	isbn          = "0-89791-642-5",
	pages         = "267--278",
	publisher     = "{ACM Press}",
	title         = "{Adding Disjunction to Datalog}",
	year          = 1994,
}