Firdaus, Alfa, Machfud Machfud, Ani Suryani, and Noer Azam Achsani. “Measuring Indonesia’s Energy Security Level in the Context of Biodiesel Agroindustry”. International Journal of Energy Economics and Policy 9, no. 6 (October 4, 2019): 154–164. Accessed November 25, 2024. https://econjournals.com/index.php/ijeep/article/view/8255.