00703naa#a2200181#i#450# EN\\bibl\119588 20260409170511.4 2223-9987 20260403b2026####ek#y0engy0150####ca RU Physical interpretation of the railway track’s equivalent mass coefficients in track strength calculations Journal article Saint-Petersburg FSBEI HE "Emperor Alexander I St. Petersburg State Transport University" 2026 12 с. Journal article local вертикальных динамических усилий. 625.033.34 Antonov Anton Yur'evich Blazhko Lyudmila Sergeevna atjournal.ru