@INPROCEEDINGS{Koenig-IROS-2008,
  author = {Koenig, Alexander and Kessler, Jens and Gross, Horst-Michael},
  title = {A Graph Matching Technique for an Appearance-Based, Visual {SLAM}-Approach
    Using {Rao}-{Blackwellized} Praticle Filters},
  booktitle = {IEEE/RSJ Int. Conf. on Intelligent Robots and Systems (IROS)},
  year = {2008},
  pages = {1576--1581},
  publisher = {IEEE}
}