TY JOUR TI DEVELOPMENT OF THE SUSTAINABILITY OF THE SERVICE SECTOR IN THE ECOSYSTEM OF THE MACRO ENVIRONMENT IN A CRISIS KW service sector KW macro environment KW macro indicators KW sustainable development mechanism KW crisis KW economic ecosystem KW integration of services JO Trade, service, food industry AU Novikova, S.I. AU Scherbenko, E.V. PY 2021 IS 1 PB Siberian Federal University