@article{BorndoerferGroetschelKlostermeieretal.1997, author = {Ralf Bornd{\"o}rfer and Martin Gr{\"o}tschel and Fridolin Klostermeier and Christian K{\"u}ttner}, title = {Optimierung des Berliner Behindertenfahrdienstes}, journal = {DMV-Mitteilungen}, volume = {2}, pages = {38 -- 43}, year = {1997}, }