ALLAHVERDIEV, B.P.; TUNA, H. Singular discrete Sturm–Liouville problems with transmission conditions. Bulletin of the Karaganda University. Mathematics Series, [S. l.], v. 123, n. 3, p. 19–32, 2026. DOI: 10.31489/2026m3/19-32. Disponível em: https://mts.buketov.edu.kz/mathematics-vestnik/article/view/915. Acesso em: 30 sep. 2026.