[1] Dalian Univ Technol, Sch Management & Econ, Dalian, Peoples R China
[2] Quaid I Azam Univ, Sch Econ, Islamabad, Pakistan
[3] Univ Westminster, Sch Finance & Accounting, London NW1 5LS, England
[4] Beijing Inst Technol, Sch Management & Econ, Beijing 100081, Peoples R China
[5] Beijing Inst Technol, Ctr Energy & Environm Policy Res, Beijing 100081, Peoples R China
[6] ILMA Univ, Dept Business Adm, Karachi, Pakistan
[7] Chulabhorn Royal Acad, HRH Princess Chulabhorn Coll Med Sci, Bangkok, Thailand