Stumme, Gerd ; Wille, Rudolf ; Wille, Uta ; Zytkow, J. M. (Bearb.) ; Quafofou, M. (Bearb.): Conceptual Knowledge Discovery in Databases Using Formal Concept Analysis Methods. 1510. In: Principles of Data Mining and Knowledge Discovery Proc. 2nd European Symposium on PKDD'98. Heidelberg, 1998 (LNAI). - {P}art of \cite{hereth03conceptual}, S. 450-458