@inproceedings{PODS-2013-HernichKLG,
	author        = "André Hernich and Clemens Kupke and Thomas Lukasiewicz and Georg Gottlob",
	booktitle     = "{Proceedings of the 32nd Symposium on Principles of Database Systems}",
	doi           = "10.1145/2463664.2465229",
	isbn          = "978-1-4503-2066-5",
	pages         = "225--236",
	publisher     = "{ACM}",
	title         = "{Well-founded semantics for extended datalog and ontological reasoning}",
	year          = 2013,
}