@misc{BleyKlaehneMenneetal.2009, author = {Andreas Bley and Roman Klaehne and Ullrich Menne and Christian Raack and Roland Wess{\"a}ly}, title = {Multi-layer Network Design - A Model-Based Optimization Approach}, institution = {Zuse Institute Berlin (ZIB)}, type = {preprintmatheon}, year = {2009}, }