@INPROCEEDINGS{Martin-ECMR-2007,
  author = {Martin, {\relax Ch}ristian and Steege, Frank-Florian and Gross, Horst-Michael},
  title = {Estimation of Pointing Poses for Visual Instructing Mobile Robots
    under Real-World Conditions},
  booktitle = {Europ. Conf. on Mobile Robots (ECMR)},
  year = {2007},
  pages = {223--228},
  publisher = {Albert-Ludwigs-Universitaet Freiburg -- Universitaetsverlag}
}