B. Ganter, und C. Meschke. Rough Sets, Fuzzy Sets, Data Mining and Granular Computing, 12th International Conference, RSFDGrC 2009, Delhi, India, December 15-18, 2009. Proceedings, Volume 5908 von Lecture Notes in Computer Science, Seite 117-126. (2009)
J. Wollbold, R. Guthke, und B. Ganter. Third International Conference, AB 2008, Castle of Hagenberg, Austria, July 31-August 2, Volume 5147 von Lecture Notes in Computer Science. Volume, Seite 230--244. (2008)