@inproceedings{STOC-1997-DuhF,
	author        = "Rong-chii Duh and Martin Fürer",
	booktitle     = "{Proceedings of the 29th Annual ACM Symposium on Theory of Computing}",
	doi           = "10.1145/258533.258599",
	isbn          = "0-89791-888-6",
	pages         = "256--264",
	publisher     = "{ACM}",
	title         = "{Approximation of k-Set Cover by Semi-Local Optimization}",
	year          = 1997,
}