A. Herison, F. Yulianda, C. Kusmana, I.W. Nurjaya and L. Adrianto
Asian Journal of Scientific Research 7 ( 2 ): 162 - 175 , 2014
F. Yulianda, Y. Wardiatno, I.W. Nurjaya and A. Herison
Asian Journal of Scientific Research 7 ( 4 ): 513 - 524 , 2014