Liu, Jing
Duan, Yongrui
Sun, Min
Funding for this research was provided by:
National Natural Science Foundation of China (CN) (11601475, 11671228)
First Class Discipline of Zhejiang-A (Zhejiang University of Finance and Economics-Statistics)
National Natural Science Foundation of Shandong Province (ZR2016AL05)
Scientific Research Project of Shandong Universities (J15LI11)
the National Natural Science Foundation of China (71532015)