Data Analysis and Information Systems Statistical and Conceptual Approaches Proceedings of the 19th Annual Conference of the Gesellschaft für Klassifikation e.V. University of Basel, March 8–10, 1995 Bock Hans-Hermann Heftet / 1996 / Engelsk
Classification, Data Analysis, and Knowledge Organization Models and Methods with Applications Bock Hans-Hermann Heftet / 1991 / Engelsk
Advances in Data Science and Classification Proceedings of the 6th Conference of the International Federation of Classification Societies (IFCS-98) Università “La Sapienza”, Rome, 21–24 July, 1998 Rizzi Alfredo Heftet / 1998 / Engelsk
Classification, Clustering, and Data Analysis Recent Advances and Applications Jajuga Krzystof Heftet / 2002 / Engelsk
Information Systems and Data Analysis Prospects — Foundations — Applications Bock Hans-Hermann Heftet / 1994 / Engelsk
Cooperation in Classification and Data Analysis Proceedings of Two German-Japanese Workshops Okada Akinori Heftet / 2009 / Engelsk
