1. Bezdek, J.: Pattern Recognition with Fuzzy Objective Function Algorithms. Plenum Press, New York (1981)
2. Miyamoto, S., Kurosawa, N.: Controlling cluster volume sizes in fuzzy c-means clustering. In: Proceedings of SCIS&ISIS 2004, pp. 1–4 (2004)
3. Yang, M.-S.: On a class of fuzzy classification maximum likelihood procedures. Fuzzy Sets Syst. 57, 365–375 (1993)
4. Ichihashi, H., Honda, K., Tani, N.: Gaussian mixture PDF approximation and fuzzy c-means clustering with entropy regularization. In: Proceedings of 4th Asian Fuzzy System Symposium, pp. 217–221 (2000)
5. Yang, M.-S., Lin, C.-Y., Tian, Y.-C.: Fuzzy classification maximum likelihood clustering with T-distribution. Appl. Mech. Mater. 598, 392–397 (2014)