Muhammad Rizal Razman, Jamaluddin Md Jahi, Kadir Arifin, Abdul Samad Hadi, Kadaruddin Aiyub, Abdul Hadi Harman Shah, Ahmad Fariz Mohamed, Shaharudin Idrus, Azahan Awang and Nor Fairuz Abu Bakar
Research Journal of Applied Sciences 6 ( 7 ): 532 - 539 , 2011