Abdyldaeva E, Kerimbekov A, Zhaparov M. On the solvability of a nonlinear optimization problem with boundary vector control of oscillatory processes. M [Internet]. 2023 Mar. 30 [cited 2025 Aug. 27];109(1):5-13. Available from: http://mts.buketov.edu.kz/index.php/mathematics-vestnik/article/view/548