EL HACHLOUF, M.; EL HADDAD, M.; HAMZA, F.; ABOULETHAR, M. Risk Minimization of Financial Assets Portfolio. International Journal of Economics and Financial Issues, [S. l.], v. 7, n. 5, p. 561–564, 2019. Disponível em: https://www.econjournals.com/index.php/ijefi/article/view/5240. Acesso em: 21 may. 2022.