@techreport{BorndoerferSagnolSchlechteetal.2013, author = {Ralf Bornd{\"o}rfer and Guillaume Sagnol and Thomas Schlechte and Elmar Swarat}, title = {Optimal Toll Enforcement - an Integration of Vehicle Routing and Duty Rostering}, institution = {ZIB}, address = {Takustr. 7, 14195 Berlin}, number = {13-79}, language = {eng}, year = {2013} }