[1] Univ Tenaga Nas, Inst Energy Policy & Res, Kajang 43000, Malaysia
[2] Univ Tenaga Nas, Inst Energy Policy & Res, Coll Energy Econ & Social Sci, Kajang 43000, Malaysia
[3] Hainan Univ, Int Business Sch, Haikou 570228, Hainan, Peoples R China
[4] Roma Tre Univ, Dept Polit Sci, Rome, Italy
[5] Western Caspian Univ, Econ Res Ctr, Baku, Azerbaijan
[6] Sunway Univ, Sunway Business Sch, Dept Econ & Finance, Subang Jaya, Malaysia
[7] Univ Econ & Human Sci Warsaw, Warsaw, Poland
[8] Korea Univ, Coll Int Studies, Seoul, South Korea
[9] Univ Faisalabad, Natl Business Sch NBS, Faisalabad, Pakistan