ALI, M.; AZMI, W.; KHAN, A. P. Portfolio Diversification and Oil Price Shocks: A Sector Wide Analysis. International Journal of Energy Economics and Policy, [S. l.], v. 9, n. 3, p. 251–260, 2019. Disponível em: https://econjournals.com/index.php/ijeep/article/view/7747. Acesso em: 18 may. 2022.