Yan, Xiaodong
Liu, Juanfang
Zhang, Zhengping
Li, Wenhao
Sun, Siguo
Zhao, Jian
Dong, Xin
Qian, Jixian
Sun, Honghui
Funding for this research was provided by:
Natural Science Basic Research Project of Shaanxi Province (2014JQ4115)
National Natural Science Foundation of China (81272073, 81300926)