Classification, data analysis and knowledge organization models and methods with applications : Proceedings of the 14th Annual Conference of the Gesellschaft für Klassifikation e.V., University of Marburg, March 12-14, 1990

por German Classification Society.
Publicado 1991

Conceptual and numerical analysis of data proceedings of the 13th Conference of the Gesellschaft für Klassifikation e. V., University of Augsburg, April 10-12. 1989

Publicado 1989