Varchenko, Ye. V., V. V. Chumak, and V. M. Olivson. “MODERNIZATION OF THE VENTILATION SYSTEM OF AC LOCOMOTIVES VL80”. Science and Transport Progress , no. 22 (June 25, 2008): 10–12. Accessed April 15, 2025. https://stp.ust.edu.ua/article/view/15504.