Sartabanov, Zh.A., and G.M. Aitenova. “Bounded on the Semi-Axis Multiperiodic Solution of a Linear Finite-Hereditarity Integro-Differential Equation of Parabolic Type”. Bulletin of the Karaganda University. Mathematics Series 111, no. 3 (September 30, 2023): 109–121. Accessed September 4, 2025. https://mts.buketov.edu.kz/index.php/mathematics-vestnik/article/view/587.