@inproceedings{STOC-2007-ChuzhoyGKT,
	author        = "Julia Chuzhoy and Venkatesan Guruswami and Sanjeev Khanna and Kunal Talwar",
	booktitle     = "{Proceedings of the 39th Annual ACM Symposium on Theory of Computing}",
	doi           = "10.1145/1250790.1250816",
	isbn          = "978-1-59593-631-8",
	pages         = "165--178",
	publisher     = "{ACM}",
	title         = "{Hardness of routing with congestion in directed graphs}",
	year          = 2007,
}