TY JOUR TI IMPORT SUBSTITUTION OF DIGITAL SERVICES: PROSPECTS FOR THE RUSSIAN ECONOMY KW digital services KW import substitution KW public-private partnership KW technology platforms JO Trade, service, food industry AU Taran, E.A. AU Slesarenko, E.V. AU Zhironkin, V.S. PY 2023 IS 3 PB Siberian Federal University