@inproceedings{SIGMOD-2011-AngelK,
	author        = "Albert Angel and Nick Koudas",
	booktitle     = "{Proceedings of the 29th ACM SIGMOD International Conference on Management of Data}",
	doi           = "10.1145/1989323.1989405",
	isbn          = "978-1-4503-0661-4",
	pages         = "781--792",
	publisher     = "{ACM}",
	title         = "{Efficient diversity-aware search}",
	year          = 2011,
}