@inproceedings{SIGMOD-1988-HutfleszSW,
	author        = "Andreas Hutflesz and Hans-Werner Six and Peter Widmayer",
	booktitle     = "{Proceedings of the 18th ACM SIGMOD International Conference on Management of Data}",
	cdrom         = "SIGMOD88/P183.PDF",
	doi           = "10.1145/50202.50222",
	pages         = "183--190",
	title         = "{Twin Grid Files: Space Optimizing Access Schemes}",
	year          = 1988,
}