1. Blake, C. L., & Merz, C. J. (1998). UCI repository of machine learning databases. Department of Information and Computer Science, University of California at Irvine, CA. .
2. Automatic cluster detection in Kohonen’s SOM;Brugger;IEEE Transactions on Neural Networks,2008
3. Card, S. K., & Mackinlay, J. (1997). The structure of the information visualization design space. In Processing of information visualization, pp. 92–99.
4. Factor controlled hierarchical SOM visualization for large set of data;Chakma;IEICE Transactions on Information and Systems,2003
5. Chen, C. C. (2005). Computational mathematics, Univ. Tsing Hua, Institute of Information Systems and Applications. .