[1] Henan Agr Univ, Sch Econ & Management, 218 Ping 'an Ave, Zhengzhou, Henan, Peoples R China
[2] Univ Texas El Paso, Woody L Hunt Coll Business, Dept Econ & Finance, 500 W Univ Ave, El Paso, TX USA
[3] Beijing Technol & Business Univ, Inst State owned Assets & Capital Management, Sch Business, Beijing, Peoples R China