00498naa#a2200169#i#450# EN\RIOR\bibl\5615 20250403113413.4 2500-1469 20141101b2014####ek#y0engy0150####ca RUS RU Strategic management of railway line technical capabilities at variable traffic volumes Journal article Moscow Publishing Center RIOR 2014 8 с. Journal article local Kosmin Vladimir rusjm.ru