GUNES, Baransel; CAKIR, Musa. A fitted approximate method for solving singularly perturbed Volterra–Fredholm integro-differential equations with an integral boundary condition. Ukrains’kyi Matematychnyi Zhurnal, [S. l.], v. 76, n. 1, p. 115–131, 2024. DOI: 10.3842/umzh.v76i1.7331. Disponível em: https://umj.imath.kiev.ua/index.php/umj/article/view/7331. Acesso em: 5 apr. 2025.