@inproceedings{PODS-1997-GyssensBG,
	author        = "Marc Gyssens and Jan Van den Bussche and Dirk Van Gucht",
	booktitle     = "{Proceedings of the 16th Symposium on Principles of Database Systems}",
	cdrom         = "['journals/anthology/cd1-3:PODS97/P062.PDF', 'journals/anthology/dvd1:text/1-3/PODS97/P062.PDF']",
	doi           = "10.1145/263661.263669",
	isbn          = "0-89791-910-6",
	pages         = "62--67",
	publisher     = "{ACM Press}",
	title         = "{Complete Geometrical Query Languages}",
	year          = 1997,
}