C.S. Lee, T.L. Ooi and C.H. Chuah
American Journal of Applied Sciences 6 ( 1 ): 72 - 78 , 2009
S. Raseetha Vani, S.F. Cheng and C.H. Chuah
American Journal of Applied Sciences 6 ( 3 ): 523 - 528 , 2009
K. Chandrasekaram, M.H. Ng, Y.M. Choo and C.H. Chuah
American Journal of Applied Sciences 6 ( 3 ): 529 - 533 , 2009