@techreport{BurgschweigerGnaedigSteinbach2004, author = {Jens Burgschweiger and Bernd Gn{\"a}dig and Marc Steinbach}, title = {Optimization Models for Operative Planning in Drinking Water Networks}, institution = {ZIB}, address = {Takustr. 7, 14195 Berlin}, number = {04-48}, language = {eng}, year = {2004} }