@inproceedings{BorndoerferSagnolSwarat2012, author = {Ralf Bornd{\"o}rfer and Guillaume Sagnol and Elmar Swarat}, title = {An IP Approach to Toll Enforcement Optimization on German Motorways}, booktitle = {Operations Research Proceedings 2011}, pages = {317 -- 322}, doi = {10.1007/978-3-642-29210-1_51}, year = {2012}, }