TY JOUR TI Methodology for Improving the Efficiency of Operation of Low-Intensity Railway Lines Based on a Logistic Approach KW Railway transport KW low-intensity railway lines KW logistics approach KW cargo flows JO Proceedings of Petersburg Transport University AU Kovalev, K.E. AU Sakovich, I.L. AU Novichihin, A.V. PY 2023 IS 20 PB FSBEI HE "Emperor Alexander I St. Petersburg State Transport University"