@misc{LangeAlbrechtBuxbaumetal.2017,
  author    = {Robert Lange and Martin Albrecht and Bernd Buxbaum and Rolf Fensterle and Martin Buck},
  title     = {Method and device for distance measurement},
  url       = {https://depatisnet.dpma.de/DepatisNet/depatisnet?action=bibdat\&docid=DE102004037137B4},
  year      = {2017}
}