@inproceedings{STOC-1997-ShmoysTA,
	author        = "David B. Shmoys and Éva Tardos and Karen Aardal",
	booktitle     = "{Proceedings of the 29th Annual ACM Symposium on Theory of Computing}",
	doi           = "10.1145/258533.258600",
	isbn          = "0-89791-888-6",
	pages         = "265--274",
	publisher     = "{ACM}",
	title         = "{Approximation Algorithms for Facility Location Problems}",
	year          = 1997,
}