@inproceedings{PODS-2007-BusscheGV,
	author        = "Jan Van den Bussche and Dirk Van Gucht and Stijn Vansummeren",
	booktitle     = "{Proceedings of the 26th Symposium on Principles of Database Systems}",
	doi           = "10.1145/1265530.1265551",
	isbn          = "978-1-59593-685-1",
	pages         = "143--154",
	publisher     = "{ACM}",
	title         = "{A crash course on database queries}",
	year          = 2007,
}