@inproceedings{RuschWille96,
  address = {Heidelberg},
  author = {Rusch, Anja and Wille, Rudolf},
  booktitle = {Data analysis and information systems},
  editor = {Bock, H.-H. and Polasek, W.},
  interhash = {ebf5d1c2af09166f0297cd413872a20b},
  intrahash = {8675da47fcb53d6fec9ae31c80f98f55},
  pages = {427-436},
  publischer = {Amer.~Math.~Soc.},
  publisher = {Springer--Verlag},
  title = {Knowledge spaces and formal concept analysis},
  year = 1996
}