[1] Nanjing Univ Aeronaut & Astronaut, Coll Econ & Management, Nanjing 211106, Peoples R China
[2] Shanghai Univ Finance & Econ, Sch Finance, Shanghai 200433, Peoples R China
[3] Cent Univ Finance & Econ, China Econ & Management Acad, Sch Innovat & Dev, Beijing 100081, Peoples R China