@article{ICLP-J-2012-AlvianoFLM,
	author        = "Mario Alviano and Wolfgang Faber and Nicola Leone and Marco Manna",
	doi           = "10.1017/S1471068412000257",
	journal       = "{Theory and Practice of Logic Programming}",
	number        = "4-5",
	pages         = "701--718",
	title         = "{Disjunctive datalog with existential quantifiers: Semantics, decidability, and complexity issues}",
	volume        = 12,
	year          = 2012,
}