[1] Qingdao Univ, Sch Business, Qingdao, Peoples R China
[2] Hebei Univ Econ & Business, Coll Commerce, Dept Int Econ & Trade, Shijiazhuang, Peoples R China
[3] Henan Finance Univ, Coll Business Adm, Zhengzhou, Peoples R China
[4] Shanghai Lixin Univ Accounting & Finance, Sch Finance, Shanghai, Peoples R China
[5] Hebei Univ Econ & Business, Coll Commerce, Dept Int Econ & Trade, 47 Xuefu Rd, Shijiazhuang 050061, Hebei, Peoples R China