TY JOUR TI Investigation of the risk of fulfilling the planned indicator of freight turnover by rail in the context of the development of a pandemic KW modeling KW forecasting KW estimation KW regression KW coefficient of determination KW point and interval assessment KW risk JO Bulletin of scientific research results AU Gerasimenko, P.V. AU Uraev, G.A. PY 2022 IS 2022 PB FSBEI HE "Emperor Alexander I St. Petersburg State Transport University"