Ali, Hamisu Sadi, Sallahuddin Hassan, and Yusuf Ibrahim Kofarmata. 2016. “Dynamic Impact of Income Inequality on Carbon Dioxide Emissions in Africa: New Evidence from Heterogeneous Panel Data Analysis”. International Journal of Energy Economics and Policy 6 (4):760-66. https://econjournals.org.tr/index.php/ijeep/article/view/3193.