A Shifted-Inverse Adaptive Multigrid Method for the Elastic Eigenvalue Problem. Communications in Computational Physics, [S. l.], v. 27, n. 1, p. 251–273, 2020. DOI: 10.4208/cicp.OA-2018-0293. Disponível em: https://global-sci.com/index.php/cicp/article/view/6780. Acesso em: 5 dec. 2025.