@inproceedings{CSL-1999-Vianu,
	author        = "Victor Vianu",
	booktitle     = "{Proceedings of the 13th International Workshop on Computer Science Logic / Eighth Annual Conference of the EACSL}",
	doi           = "10.1007/3-540-48168-0_1",
	isbn          = "3-540-66536-6",
	pages         = "1",
	publisher     = "{Springer-Verlag}",
	series        = "{Lecture Notes in Computer Science}",
	title         = "{Topological Queries in Spatial Databases}",
	volume        = 1683,
	year          = 1999,
}