BOBODZHANOVA, M.A.; KALIMBETOV, B.T.; SAFONOV , V.F. Singularly perturbed integro-differential equations with degenerate Hammerstein’s kernel. Bulletin of the Karaganda University. Mathematics Series, [S. l.], v. 116, n. 4, p. 57–68, 2024. DOI: 10.31489/2024m4/57-68. Disponível em: http://mts.buketov.edu.kz/index.php/mathematics-vestnik/article/view/739. Acesso em: 29 aug. 2025.