[1] Zhongnan Univ Econ & Law, Sch Finance, Wuhan, Hubei, Peoples R China
[2] Super Coll, Dept Management Sci, Lahore, Pakistan
[3] Southwestern Univ Finance & Econ, Sch Econ, Chengdu, Sichuan, Peoples R China
[4] Chongqing Univ, Sch Econ & Business Adm, Chongqing, Peoples R China
[5] Zhongnan Univ Econ & Law, Fac Sch Finance, Wuhan, Hubei, Peoples R China