@inproceedings{KDD-2007-KarrasMS,
	author        = "Panagiotis Karras and Dimitris Sacharidis and Nikos Mamoulis",
	booktitle     = "{Proceedings of the 13th International Conference on Knowledge Discovery and Data Mining}",
	doi           = "10.1145/1281192.1281235",
	isbn          = "978-1-59593-609-7",
	pages         = "380--389",
	publisher     = "{ACM}",
	title         = "{Exploiting duality in summarization with deterministic guarantees}",
	year          = 2007,
}