Zhang, Zi-long
Ma, Li-ying
Yao, Hong-bin
Yang, Xin
Luo, Ji-huai
Gong, Xue
Wei, Shuo-yue
Li, Quan-fang
Wang, Wei
Sun, Hong-bin
Funding for this research was provided by:
Gansu Provincial Natural Science Foundation (1506RJYA032)
Foundation of Gansu Educational Committee (2015B-078, 2015A-105)