@conference {507, title = {A Fuzzy Gap-statistic for Fuzzy C-Means}, booktitle = {The 11th IASTED International Conference on Artificial Intelligence and Soft Computing (ASC 2007)}, year = {2007}, month = {Aug 29-31,2007}, address = {Palma de Malorca, Spain}, url = {http://www.eecs.ucf.edu/georgiopoulos/sites/default/files/3158.pdf}, author = {C. Sentelle and S.L. Hong and M. Georgiopoulos and G.C. Anagnostopoulos} }