@inproceedings{OrlowskiKosterRaacketal.2007, 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}, booktitle = {Proceedings of the INOC 2007, Spa, Belgium, also ZIB Report ZR-06-47}, url = {http://www.zib.de/Publications/abstracts/ZR-06-47}, year = {2007}, }