W.N.R.W. Isahak, M. Ismail, M.A. Yarmo, J.M. Jahim and J. Salimon
Journal of Applied Sciences 10 ( 21 ): 2590 - 2595 , 2010
W.N.R.W. Isahak, M. Ismail, J. Mohd Jahim, J. Salimon and M.A. Yarmo
Trends in Applied Sciences Research 6 ( 9 ): 1055 - 1062 , 2011