@incollection{Habel-etal99-qualitative,
  author	= {Habel, C. and Hildebrandt, B. and Moratz, R.},
  editor	= {Wachsmuth, I. and Jung, B.},
  year		= {1999},
  title		= {Interactive Robot Navigation based on Qualitative Spatial Representations},
  booktitle	= {KogWis99: Proceedings der 4. Fachtagung der Gesellschaft f{\"u}r Kognitionswissenschaft},
  pages		= {219--224},
  address	= {Sankt Augustin},
  publisher	= {Infix}
}