1. Laboratory of Public Economics, University of Abomey-Calavi in Benin, Gbégamey-Cotonou, Benin; Université de Bourgogne, UFR Droit, sciences économique et politique, Site de Dijon
2. Beijing Normal University, Beijing, China
3. Faculty of Economics and Management, University of Abomey-Calavi in Benin, Gbégamey-Cotonou, Benin
4. School of International Business, Southwestern University of Finance and Economics, Chengdu, Sichuan, China
5. School of Economics, University of Johannesburg, Johannesburg, South Africa; Department of Economic & Data Science, New Uzbekistan University, Tashkent, Uzbekistan