@inproceedings{stumme99dual,
  address = {Heidelberg},
  author = {Stumme, Gerd},
  booktitle = {Datenbanksysteme in Büro, Technik und Wissenschaft. Proc. BTW'99},
  comment = {alpha},
  editor = {Buchmann, A.},
  interhash = {6a1e15bb9793cdac73aba607d53d966b},
  intrahash = {022d58bb6596a05c31d3a2eb42f72e4d},
  pages = {328-342},
  title = {Dual Retrieval in Conceptual Information Systems},
  url = {http://www.kde.cs.uni-kassel.de/stumme/papers/1999/P2021-BTW99.pdf},
  year = 1999
}