Spline Finite Difference Methods and Their Extrapolation for Singular Two-Point Boundary Value Problems. Journal of Computational Mathematics, [S. l.], v. 11, n. 4, p. 289–296, 2021. Disponível em: https://www.global-sci.com/index.php/JCM/article/view/11111. Acesso em: 5 dec. 2025.