The Application of Integral Equations to the Numerical Solution of Nonlinear Singular Perturbation Problems. Journal of Computational Mathematics, [S. l.], v. 12, n. 1, p. 36–45, 1994. Disponível em: https://www.global-sci.com/index.php/JCM/article/view/11124. Acesso em: 6 dec. 2025.