@inproceedings{VLDB-1983-Dayal,
	author        = "Umeshwar Dayal",
	booktitle     = "{Proceedings of the Ninth International Conference on Very Large Data Bases}",
	ee            = "http://www.vldb.org/conf/1983/P342.PDF",
	isbn          = "0-934613-15-X",
	pages         = "342--353",
	publisher     = "{Morgan Kaufmann}",
	title         = "{Processing Queries Over Generalization Hierarchies in a Multidatabase System}",
	year          = 1983,
}