Cepoi, Cosmin-Octavian, Mariana Bran, and Mihai Dinu. “Investigating the Nexus Between Fuel Ethanol and CO2 Emissions. A Panel Smooth Transition Regression Approach”. Journal of Business Economics and Management 21, no. 6 (October 22, 2020): 1774-1792. Accessed November 1, 2024. https://jcem.vgtu.lt/index.php/JBEM/article/view/13695.