Gunarto, Toto, Rialdi Azhar, Novita Tresiana, Supriyanto Supriyanto, and Ayi Ahadiat. “Accurate Estimated Model of Volatility Crude Oil Price”. International Journal of Energy Economics and Policy 10, no. 5 (August 10, 2020): 228–233. Accessed November 22, 2024. https://econjournals.com/index.php/ijeep/article/view/9513.