@misc{OrlowskiKosterRaacketal.2006, author = {Sebastian Orlowski and Arie M. C. A. Koster and Christian Raack and Roland Wess{\"a}ly}, title = {Two-layer Network Design by Branch-and-Cut featuring MIP-based Heuristics}, institution = {Zuse Institute Berlin (ZIB)}, type = {preprintmatheon}, year = {2006}, }