@inproceedings{STOC-2008-Vondrak,
	author        = "Jan Vondrák",
	booktitle     = "{Proceedings of the 40th Annual ACM Symposium on Theory of Computing}",
	doi           = "10.1145/1374376.1374389",
	isbn          = "978-1-60558-047-0",
	pages         = "67--74",
	publisher     = "{ACM}",
	title         = "{Optimal approximation for the submodular welfare problem in the value oracle model}",
	year          = 2008,
}