00712naa#a2200181#i#450# EN\\bibl\92925 20250131135353.5 2223-9987 20241227b2024####ek#y0engy0150####ca RU Improving the calculation method for catenary contact suspensions of electrified railways Journal article Saint-Petersburg FSBEI HE "Emperor Alexander I St. Petersburg State Transport University" 2024 10 с. Journal article local Воздушно-контактные сети. Подвешивание проводов. 621.332.3 Agunov Aleksandr Viktorovich Ivanov Denis Dmitrievich atjournal.ru