SAMUSENKO, P.F.; VIRA, M.B. Asymptotic solutions of boundary value problem for singularly perturbed system of differential-algebraic equations. Carpathian Mathematical Publications, [S. l.], v. 14, n. 1, p. 49–60, 2022. DOI: 10.15330/cmp.14.1.49-60. Disponível em: https://journals.pnu.edu.ua/index.php/cmp/article/view/4685. Acesso em: 6 may. 2024.