Asymptotic behavior of the solution of the integral boundary value problem for singularly perturbed integro-differential equations. ҚазҰУ Хабаршысы. Математика, механика, информатика сериясы, [S. l.], v. 112, n. 4, 2021. DOI: 10.26577/JMMCS.2021.v112.i4.02. Disponível em: https://bm.kaznu.kz/index.php/kaznu/article/view/916. Acesso em: 5 jul. 2026.