@INPROCEEDINGS{Schroeter-IWK-2007a,
  author = {Schroeter, {\relax Ch}ristof and Gross, Horst-Michael},
  title = {Efficient Gridmaps for {SLAM} with Rao-Blackwellized Particle Filters},
  booktitle = {Int. Scientific Colloquium Ilmenau (IWK)},
  year = {2007},
  pages = {445--450},
  volume = {1},
  publisher = {Universitaetsverlag}
}