@inproceedings{eklund00contextual,
  author = {Eklund, P. and Groh, B. and Stumme, G. and Wille, R.},
  title = {Contextual-Logic Extension of TOSCANA.},
  booktitle = {Conceptual Structures: Logical, Linguistic, and Computational},
  publisher = {Springer},
  year = {2000},
  volume = {1867},
  pages = {453-467},
  url = {http://www.kde.cs.uni-kassel.de/stumme/papers/2000/ICCS_toscanaextension.pdf}
}

@inproceedings{prediger99lattice,
  author = {Prediger, Susanne and Wille, Rudolf},
  title = {The Lattice of Concept Graphs of a Relationally Scaled Context},
  booktitle = {ICCS},
  publisher = {Springer},
  year = {1999},
  volume = {1640},
  pages = {401-414},
  url = {http://dblp.uni-trier.de/db/conf/iccs/iccs99.html#PredigerW99}
}

@inproceedings{wille97conceptual,
  author = {Wille, Rudolf},
  title = {Conceptual Graphs and Formal Concept Analysis},
  booktitle = {Conceptual Structures: Fulfilling Peirce's Dream},
  publisher = {Springer},
  year = {1997},
  volume = {1257},
  pages = {290--303}
}

@inproceedings{stumme95geometrical,
  author = {Stumme, Gerd and Wille, Rudolf},
  title = {A Geometrical Heuristic for Drawing Concept Lattices},
  booktitle = {Graph Drawing},
  publisher = {Springer},
  year = {1995},
  volume = {894},
  pages = {452-459},
  url = {http://www.kde.cs.uni-kassel.de/stumme/papers/1994/P1677-GD94.pdf}
}