SALLES, Andre Assis de. An Investigation of Some Hedging Strategies for Crude Oil Market. International Journal of Energy Economics and Policy, [S. l.], v. 3, n. 1, p. 51–59, 2012. Disponível em: https://econjournals.com./index.php/ijeep/article/view/340. Acesso em: 31 jan. 2025.