@inproceedings{VLDB-1994-SistlaYH,
	author        = "A. Prasad Sistla and Clement T. Yu and R. Haddad",
	booktitle     = "{Proceedings of the 20th International Conference on Very Large Data Bases}",
	ee            = "http://www.vldb.org/conf/1994/P570.PDF",
	isbn          = "1-55860-153-8",
	pages         = "570--581",
	publisher     = "{Morgan Kaufmann}",
	title         = "{Reasoning About Spatial Relationships in Picture Retrieval Systems}",
	year          = 1994,
}