The Error Bound of the Finite Element Method for a Two-Dimensional Singular Boundary Value Problem. Journal of Computational Mathematics, [S. l.], v. 1, n. 2, p. 143–147, 1983. Disponível em: https://staging.gsp.tricubic.dev/JCM/article/view/10718. Acesso em: 17 mar. 2026.