Dritsaki, Melina, and Chaido Dritsaki. “Forecasting European Union CO2 Emissions Using Autoregressive Integrated Moving Average-Autoregressive Conditional Heteroscedasticity Models”. International Journal of Energy Economics and Policy, vol. 10, no. 4, May 2020, pp. 411-23, https://econjournals.com/index.php/ijeep/article/view/9186.