@inproceedings{SIGMOD-2005-KoutrikaI,
	author        = "Georgia Koutrika and Yannis E. Ioannidis",
	booktitle     = "{Proceedings of the 23rd ACM SIGMOD International Conference on Management of Data}",
	doi           = "10.1145/1066157.1066167",
	isbn          = "1-59593-060-4",
	pages         = "73--84",
	publisher     = "{ACM}",
	title         = "{Constrained Optimalities in Query Personalization}",
	year          = 2005,
}