Classification and Information Processing at the Turn of the Millennium Proceedings of the 23rd Annual Conference of the Gesellschaft für Klassifikation e.V., University of Bielefeld, March 10–12, 1999 Decker Reinhold Heftet / 2000 / Engelsk
Classification - the Ubiquitous Challenge Proceedings of the 28th Annual Conference of the Gesellschaft für Klassifikation e.V., University of Dortmund, March 9-11, 2004 Weihs Claus Heftet / 2005 / Engelsk
From Data to Knowledge Theoretical and Practical Aspects of Classification, Data Analysis, and Knowledge Organization Gaul, Wolfgang A. Heftet / 1995 / Engelsk
Classification, Automation, and New Media Proceedings of the 24th Annual Conference of the Gesellschaft für Klassifikation e.V., University of Passau, March 15—17, 2000 Gaul, Wolfgang A. Heftet / 2002 / Engelsk
Mathematische Methoden der Wirtschaftswissenschaften Festschrift für OTTO OPITZ Gaul, Wolfgang A. Heftet / 2014 / Tysk
Data, Expert Knowledge and Decisions An Interdisciplinary Approach with Emphasis on Marketing Applications Gaul, Wolfgang A. Heftet / 2012 / Engelsk
Classification in the Information Age Proceedings of the 22nd Annual GfKl Conference, Dresden, March 4–6, 1998 Gaul, Wolfgang A. Heftet / 1999 / Engelsk
Between Data Science and Applied Data Analysis Proceedings of the 26th Annual Conference of the Gesellschaft für Klassifikation e.V., University of Mannheim, July 22–24, 2002 Schader Martin Heftet / 2003 / Engelsk
Data Analysis Scientific Modeling and Practical Application Gaul, Wolfgang A. Heftet / 2000 / Engelsk
DGOR Papers of the 20th Annual Meeting / Vorträge der 20. Jahrestagung Gaul, Wolfgang A. Heftet / 1992 / Tysk
Cooperation in Classification and Data Analysis Proceedings of Two German-Japanese Workshops Okada Akinori Heftet / 2009 / Engelsk
Challenges at the Interface of Data Analysis, Computer Science, and Optimization Proceedings of the 34th Annual Conference of the Gesellschaft für Klassifikation e. V., Karlsruhe, July 21 - 23, 2010 Gaul, Wolfgang A. Heftet / 2012 / Engelsk
Classification, Clustering, and Data Mining Applications Proceedings of the Meeting of the International Federation of Classification Societies (IFCS), Illinois Institute of Technology, Chicago, 15–18 July 2004 Banks, David Heftet / 2004 / Engelsk
Operations Research Proceedings 1996 Selected Papers of the Symposium on Operations Research (SOR 96), Braunschweig, September 3 - 6, 1996 Zimmermann, Uwe Heftet / 1997 / Engelsk