Xu, Yan
Yang, Kun
Yuan, Jiahai
Funding for this research was provided by:
National Natural Science Foundation of China (71673085)
Program for the Innovative Talents of Higher Education Institutions of Shanxi
General Project of Shanxi Soft Science Research Program (2017041003-5)
Article History
Received: 26 November 2019
Accepted: 11 February 2020
First Online: 17 February 2020