Information Technology Journal 12 ( 14 ): 2785 - 2789 , 2013
Guo Qiuping, Tian Cunzhi and Xia ZiXiang
Information Technology Journal 12 ( 14 ): 2838 - 2844 , 2013
Duan Shengjun, Tian Cunzhi and Li Yunchun
Information Technology Journal 12 ( 15 ): 3146 - 3151 , 2013
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