GURRIB, I.; KAMALOV, F.; ALSHAREIF, E. E. High Frequency Return and Risk Patterns in U.S. Sector ETFs during COVID-19. International Journal of Energy Economics and Policy, [S. l.], v. 12, n. 5, p. 441–456, 2022. DOI: 10.32479/ijeep.13030. Disponível em: https://www.econjournals.com/index.php/ijeep/article/view/13030. Acesso em: 28 may. 2024.