S.F. Khor, Z.A. Talib, H.A.A. Sidek, W.M. Daud and B.H. Ng
American Journal of Applied Sciences 6 ( 5 ): 1010 - 1014 , 2009
H.A.A. Sidek, S. Rosmawati, Z.A. Talib, M.K. Halimah and W.M. Daud
American Journal of Applied Sciences 6 ( 8 ): 1489 - 1494 , 2009