KANKAM, Dankwa; ACKAH, Ishmael. The Optimal Petroleum Fiscal Regime for Ghana: An Analysis of Available Alternatives. International Journal of Energy Economics and Policy, [S. l.], v. 4, n. 3, p. 400–410, 2014. Disponível em: https://econjournals.org.tr/index.php/ijeep/article/view/817. Acesso em: 31 jan. 2025.