G.H. Chong, R. Yunus, N. Abdullah, T.S.Y. Choong and S. Spotar
American Journal of Applied Sciences 6 ( 7 ): 1352 - 1358 , 2009
Y.L. Lai, T.S.Y. Choong, T.G. Chuah, I.S. Ahamad and L.F. Razon
Journal of Applied Sciences 9 ( 17 ): 3205 - 3206 , 2009