M.E. Toriman, Nor Rohaizah Binti Jamil, Mushrifah Idris, S.A. Sharifah Mastura, Habibah Ahmad, A.C. Er, Nor Azlina Abdul Aziz, Q.Y. Lee and Rahmah Elfithri
Journal of Engineering and Applied Sciences 7 ( 4 ): 300 - 305 , 2012