@INPROCEEDINGS{Kessler-ICIRA-2011,
  author = {Kessler, Jens and Schroeter, {\relax Ch}ristof and Gross, Horst-Michael},
  title = {Approaching a Person in a Socially Acceptable Manner Using a Fast
    Marching Planner},
  booktitle = {Intelligent Robotics and Applications (ICIRA)},
  year = {2011},
  pages = {368--377},
  volume = {7102},
  number = {2},
  series = {LNCS},
  publisher = {Springer}
}