Bernd Reusch. How Many Clusters Are There? - An Essay on the Basic Notions of Clustering. In Ignac Lovrek, Robert J. Howlett, Lakhmi C. Jain, editors, Knowledge-Based Intelligent Information and Engineering Systems, 12th International Conference, KES 2008, Zagreb, Croatia, September 3-5, 2008, Proceedings, Part I. Volume 5177 of Lecture Notes in Computer Science, pages 16, Springer, 2008. [doi]
Abstract is missing.