@inproceedings{BittnerStell2003,
  author	= {Bittner, Thomas and Stell, John G.},
  URL		= {http://www.ifomis.uni-leipzig.de/Research/pubs/forthcoming/rgp.pdf},
  pdf		= {http://www.ifomis.uni-leipzig.de/Research/pubs/forthcoming/rgp.pdf},
  title		= {Stratified Rough Sets and Vagueness},
  booktitle	= {Proceedings of COSIT 2003},
  year		= {forthcoming}
}