@inproceedings{VLDB-1989-HenrichSW,
	author        = "Andreas Henrich and Hans-Werner Six and Peter Widmayer",
	booktitle     = "{Proceedings of the 15th International Conference on Very Large Data Bases}",
	ee            = "http://www.vldb.org/conf/1989/P045.PDF",
	isbn          = "1-55860-101-5",
	pages         = "45--53",
	publisher     = "{Morgan Kaufmann}",
	title         = "{The LSD tree: Spatial Access to Multidimensional Point and Nonpoint Objects}",
	year          = 1989,
}