Linear boundary-value problems for systems of integro-differential equations with a degenerate kernel. Resonance case for a weakly perturbed boundary-value problem. Neliniini Kolyvannya, [S. l.], v. 25, n. 2, p. 174–183, 2022. Disponível em: https://twinhead.imath.kiev.ua/index.php/nosc/article/view/1065. Acesso em: 21 jan. 2026.