@inproceedings{VLDB-1994-GaasterlandL,
	author        = "Terry Gaasterland and Jorge Lobo",
	booktitle     = "{Proceedings of the 20th International Conference on Very Large Data Bases}",
	ee            = "http://www.vldb.org/conf/1994/P309.PDF",
	isbn          = "1-55860-153-8",
	pages         = "309--320",
	publisher     = "{Morgan Kaufmann}",
	title         = "{Qualified Answers That Reflect User Needs and Preferences}",
	year          = 1994,
}