ZAMANI, N. The Relationship between Crude Oil and Coal Markets: A New Approach. International Journal of Energy Economics and Policy, [S. l.], v. 6, n. 4, p. 801–805, 2016. Disponível em: https://econjournals.com/index.php/ijeep/article/view/3015. Acesso em: 4 may. 2024.