The Nonconforming Crouzeix-Raviart Element Approximation and Two-Grid Discretizations for the Elastic Eigenvalue Problem. Journal of Computational Mathematics, [S. l.], v. 41, n. 6, p. 1041–1063, 2023. DOI: 10.4208/jcm.2201-m2020-0128. Disponível em: https://www.global-sci.com/index.php/JCM/article/view/15748. Acesso em: 27 feb. 2026.