SALLES, A. A. 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://www.econjournals.com/index.php/ijeep/article/view/340. Acesso em: 3 mar. 2024.