@incollection{Berendt-etal98,
  author	= {Berendt, B. and Barkowsky, B. and Freksa, C. and Kelter, S.},
  editor	= {Freksa, C. and Habel, C. and Wender, K. F.},
  title		= {Spatial representation with aspect maps},
  booktitle	= {Spatial Cognition I - An interdisciplinary approach to representing and processing spatial knowledge},
  pages		= {313--336},
  publisher	= {Springer},
  year		= {1998},
  address	= {Berlin}
}