@article{CIAA-J-2010-CzumajCGJLZ11,
	author        = "Artur Czumaj and Jurek Czyzowicz and Leszek Gasieniec and Jesper Jansson and Andrzej Lingas and Pawel Zylinski",
	doi           = "10.1142/S0129054111009148",
	journal       = "{International Journal of Foundations of Computer Science}",
	number        = 8,
	pages         = "1949--1969",
	publisher     = "{World Scientific}",
	title         = "{Approximation Algorithms for Buy-at-Bulk Geometric Network Design}",
	volume        = 22,
	year          = 2011,
}