Weng-Choong Cheah, Keng-Boon Ooi, Pei-Lee Teh, Alain Yee-Loong Chong and Chen-Chen Yong
Journal of Applied Sciences 9 ( 8 ): 1422 - 1431 , 2009
Pei-Lee Teh, Chen-Chen Yong, Veeri Chettiar Arumugam and Keng-Boon Ooi
Journal of Applied Sciences 9 ( 15 ): 2701 - 2713 , 2009