@incollection{ganter87algorithmen,
  author = {Ganter, B.},
  booktitle = {Beiträge zur Begriffsanalyse },
  editor = {Ganter, B. and Wille, R. and Wolff, K. E.},
  interhash = {9774f54b5e5334ed781618385ded2e75},
  intrahash = {298def2cb3fc83ae1ff185763548df53},
  pages = {241-254},
  publisher = {B.I. Wissenschaftsverlag },
  title = {{Algorithmen zur Formalen Begriffsanalyse}},
  year = 1987
}