Sapnken, E. F., J. G. Tamba, S. N. Essiane, F. D. Koffi, and D. Njomo. “Modeling and Forecasting Gasoline Consumption in Cameroon Using Linear Regression Models”. International Journal of Energy Economics and Policy, vol. 8, no. 2, Mar. 2018, pp. 111-20, https://econjournals.com/index.php/ijeep/article/view/5985.