Numerical Studies of a Class of Composite Preconditioners. Journal of Computational Mathematics, [S. l.], v. 32, n. 2, p. 136–151, 2018. DOI: 10.4208/jcm.1401-m4145. Disponível em: https://global-sci.com/index.php/JCM/article/view/12145. Acesso em: 5 dec. 2025.