00839naa#a2200193#i#450# EN\\bibl\65861 20241114065615.4 2223-9987 20230626b2023####ek#y0engy0150####ca RU Prospective Technologies for Strengthening the Main Trackbed with a Sub-Ballast Protective Layer Using High-Performance Complexes of Russian Production Journal article Saint-Petersburg FSBEI HE "Emperor Alexander I St. Petersburg State Transport University" 2023 9 с. Journal article local Несущая способность земляного полотна. Устойчивость пути. 625.033.38 Akulinin Sergey Viktorovich Vorob'ev Vladimir Borisovich Ul'yanov Vitaliy Andreevich atjournal.ru