BLATOV, I. A.; POKORNAYA, I. Yu.; STRYGIN, V. V. Collocation method for solving singularly perturbed boundary-value problems by using cubic splines. Ukrains’kyi Matematychnyi Zhurnal, [S. l.], v. 46, n. 4, p. 411–417, 1994. Disponível em: https://umj.imath.kiev.ua/index.php/umj/article/view/5738. Acesso em: 7 apr. 2025.