Xing, Minmin
Guo, Ling
Hao, Zijun
Funding for this research was provided by:
High School 131 Leading Talent Project of Shanxi, Undergraduate Training Programs for Innovation and Entrepreneurship of Shanxi Province (WL2015CXCY-SJ-01, WL2015CXCY-YJ-18)
Teaching Reform Project of Shanxi Normal University (WL2015JGXM-YJ-13)
Article History
Received: 26 March 2018
Accepted: 18 May 2018
First Online: 26 May 2018