A Modified BFGS Formula Maintaining Positive Definiteness with Armijo-Goldstein Steplengths. Journal of Computational Mathematics, [S. l.], v. 13, n. 2, p. 156–160, 1995. Disponível em: https://global-sci.com/index.php/JCM/article/view/11171. Acesso em: 5 dec. 2025.