Book (0471988642)
Hopner, F.; Hoppner, F. & Klawonn, F.
Fuzzy Cluster Analysis: Methods for Classification, Data Analysis and Image Recognition
Wiley & Sons,
1999
Book (hoeppner1999fuzzy)
Höppner, F.; Klawonn, F.; Kruse, R. & Runkler, T.
Fuzzy Cluster Analysis
John Wiley & Sons, Inc.,
1999