Akay, Ebru Caglayan, and Sinem Guler Kangalli Uyar. “Endogeneity and Nonlinearity in the Environmental Kuznets Curve: A Control Function Approach”. Panoeconomicus 68, no. 4 (September 15, 2021): 555–576. Accessed December 22, 2024. https://panoeconomicus.org/index.php/jorunal/article/view/869.