@techreport{BorndoerferSagnolSwarat2012, author = {Ralf Bornd{\"o}rfer and Guillaume Sagnol and Elmar Swarat}, title = {A Case Study on Optimizing Toll Enforcements on Motorways}, institution = {ZIB}, address = {Takustr. 7, 14195 Berlin}, number = {12-21}, language = {eng}, year = {2012} }