On Extrapolation Cascadic Multigrid Method. Journal of Computational Mathematics, [S. l.], v. 29, n. 6, p. 684–697, 2021. DOI: 10.4208/jcm.1110-m11si05. Disponível em: https://www.global-sci.com/index.php/JCM/article/view/12057. Acesso em: 5 dec. 2025.