OSINTSEVA, Marina A. Differentiation of Oil Production Break-even Level among World Oil Companies. International Journal of Energy Economics and Policy, [S. l.], v. 11, n. 4, p. 249–256, 2021. Disponível em: https://econjournals.com.tr/index.php/ijeep/article/view/11260. Acesso em: 25 may. 2025.