STEFFES, D. W. . The New World Oil Pricing System-Year 2000. Strategic Planning for Energy and the Environment, [S. l.], v. 20, n. 3, p. 12–14, 2023. Disponível em: https://journals.riverpublishers.com/index.php/SPEE/article/view/20467. Acesso em: 28 apr. 2026.