E.S. Marsom, A.K. Yahya, N.A. Hamid, Z. Awang and I. Hamadneh
Journal of Applied Sciences 8 ( 12 ): 2312 - 2317 , 2008
A.K. Yahya, M.I. Yusof, B. Musa, W.F. Abdullah, Z. Zamri and M.H. Jumali
Journal of Applied Sciences 8 ( 6 ): 1007 - 1013 , 2008