Indupurnahayu I, Setiawan EB, Agusinta L, Suryawan RF, Ricardianto P, Sari M, et al. Changes in Demand and Supply of the Crude Oil Market During the COVID-19 Pandemic and its Effects on the Natural Gas Market. IJEEP [Internet]. 2021 Apr. 10 [cited 2024 Nov. 9];11(3):1-6. Available from: https://econjournals.org.tr/index.php/ijeep/article/view/10671