Guanghui Ren, Shengyang He and Yunlong Yang
Information Technology Journal 12 ( 5 ): 975 - 982 , 2013
Shengyang He, Guanghui Ren, Haoran Zhu, Yunlong Yang and Longwen Wu
Information Technology Journal 12 ( 7 ): 1334 - 1341 , 2013
Guanghui Ren, Shengyang He and Yunlong Yang
Information Technology Journal 12 ( 6 ): 1245 - 1250 , 2013