Mahmood, Haider, Maham Furqan, Tarek Tawfik Yousef Alkhateeb, and Mahmoud Mohamad Fawaz. 2019. “Testing the Environmental Kuznets Curve in Egypt: Role of Foreign Investment and Trade”. International Journal of Energy Economics and Policy 9 (2):225-28. https://econjournals.com./index.php/ijeep/article/view/7271.