HU, Yukun. Research on the Portfolio Construction Strategies under the Background of Epidemic. Finance & Economics, [S. l.], v. 2, n. 4, p. 1712, 2024. DOI: 10.61173/es61ak41. Disponível em: https://fe.deanfrancis.press/article/view/941. Acesso em: 4 nov. 2026.