New Spectral Idea for Conjugate Gradient Methods and its Global Convergence Theorems. European Journal of Pure and Applied Mathematics, Maryland, USA, v. 15, n. 2, p. 784–795, 2022. DOI: 10.29020/nybg.ejpam.v15i2.4364. Disponível em: https://www.ejpam.com/index.php/ejpam/article/view/4364.. Acesso em: 3 may. 2024.