Ahmad, Shabbir. “Economic Indicators and Environmental Expenditure: A Re-Evaluation of the Kuznets Curve in the EU-27 ”. Journal of Environmental Science and Economics 3, no. 4 (December 21, 2024): 156–178. Accessed April 3, 2025. https://www.jescae.com/index.php/jescae/article/view/1091.