P. Samusenko, T. Novik, and M. Rashevskyi, “Integration of Non-Stationary Optimal Control Systems with Delay and an Unstable Spectrum”, Chall. issue mod. sci., vol. 3, pp. 128–132, Nov. 2024, Accessed: Mar. 29, 2025. [Online]. Available: https://cims.fti.dp.ua/j/article/view/256