00723naa#a2200169#i#450# EN\\bibl\70301 20241223033103.1 2223-9987 20230926b2023####ek#y0engy0150####ca RU The Use of Price Elasticity Coefficients of Demand to Assess the Solvency of Freight in Railway Transport for Tariff Purposes (on the Example of the Russian Federation in 2006–2023) Journal article Saint-Petersburg FSBEI HE "Emperor Alexander I St. Petersburg State Transport University" 2023 13 с. Journal article local Экономика транспорта и связи. 338.47 Egorov Yuriy Vladimirovich atjournal.ru