DYMKOV, Michael P. Optimisation problem for some class of hybrid differential-difference systems with delay. Journal of the Belarusian State University. Mathematics and Informatics, [S. l.], n. 1, p. 6–17, 2021. DOI: 10.33581/2520-6508-2021-1-6-17. Disponível em: https://journals.bsu.by/index.php/mathematics/article/view/3446. Acesso em: 18 jul. 2026.