@inproceedings{RisserBell2011,
  author    = {Ralf Risser and Daniel Bell},
  title     = {Fitness to drive and mobility behaviour among senior road users. Fit to Drive},
  booktitle = {5th International Traffic Expert Congress, Proceedings. Schriftenreihe Fahreignung},
  editor    = {Twisk Divera and Wolf-R{\"u}diger Nickel},
  year      = {2011},
}