[Cui, Xinghua] Jiangxi Univ Finance & Econ, Sch Econ, Nanchang 330013, Jiangxi, Peoples R China.
[Cui, Xinghua] East China Univ Sci & Technol, Sch Business, Shanghai 200237, Peoples R China.
[Xu, Ning] Henan Normal Univ, Sch Polit Sci & Publ Adm, Xinxiang 453007, Henan, Peoples R China.
[Yan, Xiangwu] Zhejiang Univ Finance Econ, Sch Econ, Hangzhou 310018, Peoples R China.
[Zhang, Wenjie] Wuhan Polytech Univ, Sch Management, Wuhan 430048, Peoples R China.