SARTABANOV, Z.; AITENOVA, G. MULTIPERIODIC SOLUTIONS OF LINEAR SYSTEMS INTEGRO-DIFFERENTIAL EQUATIONS WITH OPERATOR AND ε-PERIOD OF HEREDITARY. Известия НАН РК. Серия физико-математическая, [S. l.], n. 1, p. 23–31, 2020. Disponível em: https://journals.nauka-nanrk.kz/physics-mathematics/article/view/388. Acesso em: 21 ноя. 2024.