Youyun Li, Ziquan Xiang, Xuyu Xiang and Song Wang
Information Technology Journal 9 ( 8 ): 1647 - 1652 , 2010
Jiaohua Qin, Xuyu Xiang, Yu Deng, Youyun Li and Lili Pan
Information Technology Journal 13 ( 16 ): 2588 - 2592 , 2014