Robot vision in the language of geometric algebra
 @InCollection{sommergebken07beitrag,
  author =       {Gerald Sommer and Christian Gebken},
  title =        {Robot Vision in the Language of Geometric Algebra},
  booktitle =    {Vision Systems: Applications},
  editor =       {Goro Obinata and Ashish Dutta},
  volume =       {},
  pages =        {459--486},
  isbn =         {ISBN 978-3-902613-01-1},
  year =         {2007},
  publisher =    {}
 }