Zh.А. Sartabanov и G.M.Aitenova (2019) «MULTIPERIODIC SOLUTIONS OF LINEAR SYSTEMS INTEGRO-DIFFERENTIAL EQUATIONS WITH c D -OPERATOR AND  -PERIOD OF HEREDITARY», Physico-mathematical series, (6), сс. 106–122. доступно на: https://journals.nauka-nanrk.kz/physics-mathematics/article/view/1697 (просмотрено: 4 декабрь 2024).