Kalabukhin Y, Martynov I, Trufanova A. ON THE QUESTION OF DETERMINING THE EFFICIENCY OF THE MODERNIZATION OF ELECTRIC TRAINS. TST [Internet]. 2022 Dec. 29 [cited 2026 Jul. 27];(40):35-46. Available from: https://tst.duit.in.ua/index.php/tst/article/view/340