Lian, Jing
Shi, Bin
Li, Mingcong
Nan, Ziwei
Ma, Yide
Funding for this research was provided by:
National Natural Science Foundation of China (61175012 & 61201422)
Natural Science Foundation of Gansu Province of China (148RJZA044)
Foundation of Lanzhou Jiaotong University of China (2013004 & 2014005)