Egbetokun, Samuel, Evans S. Osabuohien, and Temidayo Akinbobola. 2018. “Feasible Environmental Kuznets and Institutional Quality in North and Southern African Sub-Regions”. International Journal of Energy Economics and Policy 8 (1):104-15. https://econjournals.com.tr/index.php/ijeep/article/view/5948.