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American Journal of Applied Sciences 7 ( 2 ): 214 - 220 , 2010
Sie-Tiong Ha, Lay-Khoon Ong, Yip-Foo Win, Guan-Yeow Yeap, Nilesh L. Bonde and Peng-Lim Boey
American Journal of Applied Sciences 7 ( 5 ): 656 - 660 , 2010