AZAR, S. A.; SALHA, A. The bias in the long run relation between the prices of Brent and WTI crude oils. International Journal of Energy Economics and Policy, [S. l.], v. 7, n. 1, p. 44–54, 2017. Disponível em: https://econjournals.com/index.php/ijeep/article/view/3368. Acesso em: 24 apr. 2024.