@inproceedings{STOC-2006-AndrewsZ,
	author        = "Matthew Andrews and Lisa Zhang",
	booktitle     = "{Proceedings of the 38th Annual ACM Symposium on Theory of Computing}",
	doi           = "10.1145/1132516.1132592",
	isbn          = "1-59593-134-1",
	pages         = "517--526",
	publisher     = "{ACM}",
	title         = "{Logarithmic hardness of the directed congestion minimization problem}",
	year          = 2006,
}