@misc{KosterOrlowskiRaacketal.2007, author = {Arie M. C. A. Koster and Sebastian Orlowski and Christian Raack and Georg Baier and Thomas Engel}, title = {Single-layer Cuts for Multi-layer Network Design Problems}, institution = {Zuse Institute Berlin (ZIB)}, type = {preprintmatheon}, year = {2007}, }