@techreport{GroetschelBorndoerfer2014, author = {Martin Gr{\"o}tschel and Ralf Bornd{\"o}rfer}, title = {Mathematik im Verkehr}, institution = {ZIB}, address = {Takustr. 7, 14195 Berlin}, number = {14-03}, language = {deu}, year = {2014} }