[1] Nanchang Univ, Sch Econ & Management, Nanchang, Peoples R China
[2] City Univ Macau, Fac Finance, Macau 999078, Peoples R China
[3] Natl Cent Univ, Dept Finance, Taoyuan, Taiwan
[4] China Univ Min & Technol, Sch Econ & Management, Xuzhou 221116, Peoples R China