El-Aasar, Khadiga Mohamed, and Shaimaa A. Hanafy. 2018. “Investigating the Environmental Kuznets Curve Hypothesis in Egypt: The Role of Renewable Energy and Trade in Mitigating GHGs”. International Journal of Energy Economics and Policy 8 (3):177-84. https://www.econjournals.com/index.php/ijeep/article/view/6316.