Pavlenko , V. D., and V. V. Cherevatyi. “METHOD FOR IDENTIFICATION OF NONLINEAR SYSTEMS BASED ON VOLTERR SERIES IN THE TIME DOMAIN”. Problems of Informatization and Management, vol. 2, no. 11, Nov. 2021, pp. 161-4, https://jrnl.kai.edu.ua/index.php/PIU/article/view/16042.