Guo, Ruichao
Jiang, Xiaomeng
Wang, Hongren
Funding for this research was provided by:
new entry doctoral research project of Jilin University of Finance and Economics (2017B2012)
doctoral research project of Jilin University of Finance and Economics (2018B26)
Article History
Received: 12 August 2018
Accepted: 1 January 2019
First Online: 11 January 2019
Competing interests
: The authors declare that they have no competing interests.