Popov ИП. Differential equations of the start of motion of elasticly coupled inert bodies on the example of a train with elastic couplings. Вест. ПГУ. Мат. Мех. Инф. [Internet]. 2021 Dec. 10 [cited 2025 Apr. 5];(2 (53):45-51. Available from: https://press.psu.ru/index.php/Math/article/view/5019