Jiang, Tao
Ye, Ling
Han, Zhongbo
Liu, Yuan
Yang, Yinxue
Peng, Zhihai
Fan, Junwei
Funding for this research was provided by:
National Natural Science Foundation of China (81272744)
National Natural Science Foundation of China (81302111)
National Natural Science Foundation of China (81560394)
National Natural Science Foundation of China (81460369)
the Scientific Research Project grant funded by Ningxia high school (NGY2015096)