@inproceedings{SIGMOD-1997-ONeilQ,
	author        = "Patrick E. O'Neil and Dallan Quass",
	booktitle     = "{Proceedings of the 27th ACM SIGMOD International Conference on Management of Data}",
	cdrom         = "SIGMOD97/P038.PDF",
	doi           = "10.1145/253260.253268",
	pages         = "38--49",
	publisher     = "{ACM Press}",
	title         = "{Improved Query Performance with Variant Indexes}",
	year          = 1997,
}