Ma, Yurun
Wang, Li
Ma, Yide
Dong, Min
Du, Shiqiang
Sun, Xiaoguang
Funding for this research was provided by:
National Natural Science Foundation of China (No. 61175012)
Natural Science Foundation of Gansu Province (No. 1208RJZA265)
Fundamental Research Funds for the Central Universities (No.lzujbky-2015-197)
Fundamental Research Funds for the Central Universities (lzujbky-2015-196)