Tagwa Ahmed Musa, Ahmed Abd Elaziz Ibrahin, Guan ZhenLiang and Fei Qi
American Journal of Environmental Sciences 1 ( 1 ): 29 - 33 , 2005
Mutwakil Nafi, Fei Qi and Yang Xaing Hua
Journal of Applied Sciences 4 ( 2 ): 235 - 241 , 2004
Aida Bensekhria, Fei Qi, Wanzhong Shi and Yeping Zhan
Journal of Applied Sciences 9 ( 6 ): 1056 - 1064 , 2009
Mutwakil Nafi, Fei Qi and Yang Xaing Hua
Journal of Applied Sciences 3 ( 10 ): 604 - 613 , 2003