OLǦAR, H.; MUHTAROV, F.; MUKHTAROV, O. Operator-pencil treatment of multi-interval Sturm-Liouville equation with boundary-transmission conditions. Bulletin of the Karaganda University. Mathematics Series, [S. l.], v. 115, n. 3, p. 126–136, 2024. DOI: 10.31489/2024m3/126-136. Disponível em: http://mts.buketov.edu.kz/index.php/mathematics-vestnik/article/view/820. Acesso em: 10 jul. 2025.