Hongfang Zhou, Boqin Feng, Lintao Lv and Hui Yue
Information Technology Journal 6 ( 2 ): 251 - 254 , 2007
Hongfang Zhou, Boqin Feng, Lintao Lv and Yue Hui
Information Technology Journal 6 ( 2 ): 255 - 258 , 2007