@inproceedings{SIGMOD-1985-RoussopoulosL,
	author        = "Nick Roussopoulos and Daniel Leifker",
	booktitle     = "{Proceedings of the 15th ACM SIGMOD International Conference on Management of Data}",
	cdrom         = "SIGMOD85/P017.PDF",
	doi           = "10.1145/318898.318900",
	pages         = "17--31",
	publisher     = "{ACM Press}",
	title         = "{Direct Spatial Search on Pictorial Databases Using Packed R-Trees}",
	year          = 1985,
}