@inproceedings{SIGMOD-1997-HellersteinHW,
	author        = "Joseph M. Hellerstein and Peter J. Haas and Helen J. Wang",
	booktitle     = "{Proceedings of the 27th ACM SIGMOD International Conference on Management of Data}",
	cdrom         = "SIGMOD97/P171.PDF",
	doi           = "10.1145/253260.253291",
	pages         = "171--182",
	publisher     = "{ACM Press}",
	title         = "{Online Aggregation}",
	year          = 1997,
}