S. Sakthivel and R. Suresh
International Journal of Soft Computing 1 ( 3 ): 160 - 165 , 2006
Sakthivel, S. and R. Suresh
International Journal of Soft Computing 1 ( 3 ): 166 - 169 , 2006
International Journal of Soft Computing 1 ( 3 ): 170 - 174 , 2006