Finite Element Eigenvalue Computation on Domains with Reentrant Corners Using Richardson Extrapolation. Journal of Computational Mathematics, [S. l.], v. 8, n. 4, p. 321–332, 2021. Disponível em: https://global-sci.com/index.php/JCM/article/view/11000. Acesso em: 6 dec. 2025.