Lian, Jing
Ma, Yide
Ma, Yurun
Shi, Bin
Liu, Jizhao
Yang, Zhen
Guo, Yanan
Funding for this research was provided by:
National Natural Science Foundation of China (61175012)
National Natural Science Foundation of China (61201422)
Natural Science Foundation of Gansu Province of China (148RJZA044)
Youth Foundation of Lanzhou Jiaotong University of China (2014005)