@inproceedings{VLDB-1980-HammerZ,
	author        = "Michael Hammer and Stanley B. Zdonik",
	booktitle     = "{Proceedings of the Sixth International Conference on Very Large Data Bases}",
	cdrom         = "VLDB80/P137.PDF",
	pages         = "137--147",
	publisher     = "{IEEE Computer Society}",
	title         = "{Knowledge-Based Query Processing}",
	year          = 1980,
}