Sun, Min
Sun, Hongchun
Funding for this research was provided by:
the Natural Science Foundation of China (11671228, 11601475)
the foundation of First Class Discipline of Zhejiang-A (Zhejiang University of Finance and Economics- Statistics)
the foundation of Scientific Research Project of Shandong Universities (J15LI11)
National Natural Science Foundation of Shandong Province (ZR2016AL05)
the Educational Reform Project of Zaozhuang University (1021402)