@book{kv-cota-05,
	author = {B. Korte and J. Vygen},
	isbn = {9783540256847},
	lccn = {2005931374},
	publisher = {Springer},
	series = {Algorithms and Combinatorics},
	title = {Combinatorial Optimization: Theory and Algorithms},
	url = {http://books.google.de/books?id=tu6nz572uJIC},
	year = 2005
}