Korte, Bernhard and Jens Vygen, Combinatorial Optimization: Combinatorial Optimization: Theory and Algorithms, volume 21, Algorithms and Combinatorics, Berlin, Heidelberg: Springer Berlin Heidelberg, 2012.
Korte, Bernhard and Jens Vygen, Combinatorial Optimization: Combinatorial Optimization: Theory and Algorithms, volume 21, Algorithms and Combinatorics, Berlin, Heidelberg: Springer Berlin Heidelberg, 2012.