Yazid A. M, H.M. Fong, A.B. Sipat, M. Shuhaimi and Y.M.A. Idris
Pakistan Journal of Biological Sciences 2 ( 3 ): 654 - 659 , 1999
Yazid A.M, A.B. Salina, M. Shuhaimi, H. Osman and J. Normah
Pakistan Journal of Biological Sciences 2 ( 3 ): 660 - 663 , 1999