Babyak, Mykola, Volodymyr Horobets, Viktor Sychenko, and Yevhen Horobets. “Comparative Tests of Contact Elements at Current Collectors in Order to Comprehensively Assess Their Operational Performance”. Eastern-European Journal of Enterprise Technologies 6, no. 12 (96) (December 19, 2018): 13–21. Accessed May 6, 2024. https://journals.uran.ua/eejet/article/view/151751.