@inproceedings{SIGMOD-2008-SarkasDKT,
	author        = "Nikos Sarkas and Gautam Das and Nick Koudas and Anthony K. H. Tung",
	booktitle     = "{Proceedings of the 26th ACM SIGMOD International Conference on Management of Data}",
	doi           = "10.1145/1376616.1376643",
	isbn          = "978-1-60558-102-6",
	pages         = "239--250",
	publisher     = "{ACM}",
	title         = "{Categorical skylines for streaming data}",
	year          = 2008,
}