@techreport{D'AndreagiovanniMettPulaj2015, author = {Fabio D'Andreagiovanni and Fabian Mett and Jonad Pulaj}, title = {An (MI)LP-based Primal Heuristic for 3-Architecture Connected Facility Location in Urban Access Network Design}, institution = {ZIB}, address = {Takustr. 7, 14195 Berlin}, number = {15-62}, language = {eng}, year = {2015} }