@techreport{LenzBecker2018, author = {Ralf Lenz and Kai-Helge Becker}, title = {Optimization of Capacity Expansion in Potential-driven Networks including Multiple Looping - A comparison of modelling approaches}, institution = {ZIB}, address = {Takustr. 7, 14195 Berlin}, number = {18-44}, language = {eng}, year = {2018} }