Mamanov, M. и Khasanov, G. (2026) «Optimal Control for a Nonlinear System of Integro-Differential Equations of Fractional Order», Journal of Osh State University. Differential Equations, (2), сс. 25–39. доступно на: https://journal.oshsu.kg/index.php/diffeq/article/view/4821 (просмотрено: 27 июль 2026).