Nie, Huihui
Liang, Wei
Chi, Chengzhong
Li, Xianrong
Fan, Haiwei
Yang, Fuqian
Funding for this research was provided by:
National Natural Science Foundation of China (51175363, 51274149)
The Youth Science Foundation of Shanxi Province (2008021033)
The Doctoral Program of Higher Education of China (20111402110004)