S. Dyuti, S. Mridha and S. K. Shaha
American Journal of Applied Sciences 7 ( 6 ): 815 - 822 , 2010
S.K. Shaha, S. Dyuti, M.M. Haque and M.A. Maleque
Journal of Applied Sciences 10 ( 12 ): 1196 - 1199 , 2010