“Reexamination of Environmental Kuznets Curve for Ecological Footprint: The Role of Biocapacity, Human Capital, and Trade”. Pakistan Journal of Commerce and Social Sciences (ISSN 1997-8553) 14, no. 1 (March 31, 2020): 202–254. Accessed October 16, 2025. https://jes.ac.pk/index.php/jes/article/view/187.