Lestari, S. D., A. Indrabudiman, W. S. Handayani, and T. Sugiarto. “Estimation With Macroeconomic Variables in Long-Term Elasticity of Gasoline Consumption”. International Journal of Energy Economics and Policy, vol. 9, no. 1, Dec. 2018, pp. 326-9, https://econjournals.com/index.php/ijeep/article/view/7308.