@techreport{HenningsPetkovicStreubel2021, author = {Felix Hennings and Milena Petkovic and Tom Streubel}, title = {On the Numerical Treatment of Interlaced Target Values - Modeling, Optimization and Simulation of Regulating Valves in Gas Networks}, institution = {ZIB}, address = {Takustr. 7, 14195 Berlin}, number = {21-32}, language = {eng}, year = {2021} }