[1] Univ Abomey Calavi Benin, Lab Publ Econ, Cotonou, Benin
[2] Univ Bourgogne, UFR Droit Sci Econ & Polit, Dijon, France
[3] Beijing Normal Univ, Beijing, Peoples R China
[4] Univ Abomey Calavi Benin, Fac Econ & Management, Cotonou, Benin
[5] Southwestern Univ Finance & Econ, Sch Int Business, Chengdu, Sichuan, Peoples R China
[6] Univ Johannesburg, Sch Econ, Johannesburg, South Africa
[7] New Uzbekistan Univ, Dept Econ & Data Sci, Tashkent, Uzbekistan
[8] New Uzbekistan Univ, Dept Econ & Data Sci, 54 Mustaqillik Ave, Tashkent 100007, Uzbekistan