@inproceedings{STOC-2006-HayrapetyanTW,
	author        = "Ara Hayrapetyan and Éva Tardos and Tom Wexler",
	booktitle     = "{Proceedings of the 38th Annual ACM Symposium on Theory of Computing}",
	doi           = "10.1145/1132516.1132529",
	isbn          = "1-59593-134-1",
	pages         = "89--98",
	publisher     = "{ACM}",
	title         = "{The effect of collusion in congestion games}",
	year          = 2006,
}