@inproceedings{VLDB-1979-YoussefiW,
	author        = "Karel Youssefi and Eugene Wong",
	booktitle     = "{Proceedings of the Fifth International Conference on Very Large Data Bases}",
	cdrom         = "VLDB79/P409.PDF",
	pages         = "409--417",
	publisher     = "{IEEE Computer Society}",
	title         = "{Query Processing in a Relational Database Management System}",
	year          = 1979,
}