Popov, Nickolay. “NON-LINEAR MODEL IN REGION OF VERY LOW SPEEDS FOR A PERMANENT MAGNET DIRECT CURRENT MOTOR”. ENVIRONMENT. TECHNOLOGIES. RESOURCES. Proceedings of the International Scientific and Practical Conference 3 (June 22, 2024): 225–231. Accessed November 23, 2024. https://journals.ru.lv/index.php/ETR/article/view/8152.