Sharkas, Randa, and Mohanad Ismael. “The Impact of Political Stability on Environmental Situation: Comparative NARDL Analysis on Developed and Developing Countries”. International Journal of Energy Economics and Policy 15, no. 4 (June 25, 2025): 673–682. Accessed December 5, 2025. https://econjournals.com/index.php/ijeep/article/view/19663.