@inproceedings{STOC-2000-Vygen,
	author        = "Jens Vygen",
	booktitle     = "{Proceedings of the 32nd Annual ACM Symposium on Theory of Computing}",
	doi           = "10.1145/335305.335319",
	isbn          = "1-58113-184-4",
	pages         = "117--125",
	publisher     = "{ACM}",
	title         = "{On dual minimum cost flow algorithms}",
	year          = 2000,
}