Xu, Jiuping
Fang, Guomin
Wu, Zezhong
Funding for this research was provided by:
National Natural Science Foundation of China (71301110)
Humanities and Social Sciences Foundation of the Ministry of Education (13XJC630015)
Research Fund for the Doctoral Program of Higher Education of China (20130181120059)
Project of Education Department of Sichuan Province (14ZB0173)