KASSYM, A. S.; KUSSAINOVA, L. K. On the approximation of solutions of one singular differential equation on the axis. Bulletin of the Karaganda University. Mathematics Series, [S. l.], v. 108, n. 4, p. 86–97, 2022. DOI: 10.31489/2022m/86-97. Disponível em: https://mts.buketov.edu.kz/index.php/mathematics-vestnik/article/view/536. Acesso em: 2 jul. 2025.