@techreport{ScheweSchmidtThuerauf2020, author = {Lars Schewe and Martin Schmidt and Johannes Th{\"u}rauf}, title = {Global Optimization for the Multilevel European Gas Market System with Nonlinear Flow Models on Trees}, journal = {Journal of Global Optimization}, doi = {10.1007/s10898-021-01099-8}, year = {2020}, url = {https://opus4.kobv.de/opus4-trr154/322}, type = {Preprint}, institution = {TRR 154} }