BOBODZHANOVA, M.A.; KALIMBETOV, B.T.; BEKMAKHANBET, G.M. Asymptotics solutions of a singularly perturbed integro-differential fractional order derivative equation with rapidly oscillating coefficients. Bulletin of the Karaganda University. Mathematics Series, [S. l.], v. 104, n. 4, p. 56–67, 2021. DOI: 10.31489/2021m4/56-67. Disponível em: https://mts.buketov.edu.kz/index.php/mathematics-vestnik/article/view/463. Acesso em: 8 jul. 2025.