A boundary-value problem with impulse effects for singularly perturbed systems in the noncritical case. Neliniini Kolyvannya, [S. l.], v. 3, n. 2, p. 188–205, 2000. Disponível em: https://twinhead.imath.kiev.ua/index.php/nosc/article/view/110. Acesso em: 22 jan. 2026.