@inproceedings{ganter86conceptual,
  address = { Amsterdam },
  author = {Ganter, Bernhard and Stahl, J{\"u}rgen and Wille, Rudolf},
  booktitle = { Classification as a tool of research },
  editor = {Gaul, W. and Schader, Martin},
  interhash = {d3d136609a76a5b4b1e12a5dce9063e3},
  intrahash = {1087963e18eae890ef3129e130883206},
  pages = { 169-176 },
  publisher = { North--Holland },
  title = { Conceptual measurement and many--valued
      contexts },
  year = { 1986 }
}