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, 81302111, 81560394, 81460369)
the Scientific Research Project grant funded by Ningxia high school (NGY2015096)