Molybai kyzy, A., Sarman, A. и Tankeyeva, A. (2026) «Boundary Value Problem for a System of Fredholm Integro-Differential Equations with Maxima», Journal of Osh State University. Differential Equations, (1), сс. 15–23. доступно на: https://journal.oshsu.kg/index.php/diffeq/article/view/3577 (просмотрено: 18 август 2026).