@inproceedings{PODS-2014-PichlerS,
	author        = "Reinhard Pichler and Sebastian Skritek",
	booktitle     = "{Proceedings of the 33rd Symposium on Principles of Database Systems}",
	doi           = "10.1145/2594538.2594542",
	isbn          = "978-1-4503-2375-8",
	pages         = "39--50",
	publisher     = "{ACM}",
	title         = "{Containment and equivalence of well-designed SPARQL}",
	year          = 2014,
}