@inproceedings{STOC-2002-JainMS,
	author        = "Kamal Jain and Mohammad Mahdian and Amin Saberi",
	booktitle     = "{Proceedings of the 34th Annual ACM Symposium on Theory of Computing}",
	doi           = "10.1145/509907.510012",
	isbn          = "1-58113-495-9",
	pages         = "731--740",
	publisher     = "{ACM}",
	title         = "{A new greedy approach for facility location problems}",
	year          = 2002,
}