@inproceedings{STOC-2011-DinitzK,
	author        = "Michael Dinitz and Robert Krauthgamer",
	booktitle     = "{Proceedings of the 43rd Annual ACM Symposium on Theory of Computing}",
	doi           = "10.1145/1993636.1993680",
	isbn          = "978-1-4503-0691-1",
	pages         = "323--332",
	publisher     = "{ACM}",
	title         = "{Directed spanners via flow-based linear programs}",
	year          = 2011,
}