@inproceedings{Bittner2002-granularity,
  author	= {Bittner, Thomas},
  editor	= {van Harmelen, F.},
  URL		= {http://people.ifomis.uni-leipzig.de/thomas.bittner/ecai02.pdf},
  pdf		= {http://people.ifomis.uni-leipzig.de/thomas.bittner/ecai02.pdf},
  title		= {Reasoning about Qualitative Spatio-Temporal Relations at Multiple Levels of Granularity},
  booktitle	= {Proceedings of the 15th European Conference on Artificial Intelligence -- ECAI 2002},
  publisher	= {IOS Press},
  address	= {Amsterdam},
  year		= {2002}
}