@inproceedings{VLDB-2001-Adler,
	author        = "David W. Adler",
	booktitle     = "{Proceedings of the 27th International Conference on Very Large Data Bases}",
	ee            = "http://www.vldb.org/conf/2001/P687.pdf",
	isbn          = "1-55860-804-4",
	pages         = "687--690",
	publisher     = "{Morgan Kaufmann}",
	title         = "{DB2 Spatial Extender — Spatial data within the RDBMS}",
	year          = 2001,
}