TY JOUR TI ANALYSING TERTIARIZATION AS A STRUCTURAL ECONOMIC CHARACTERISTIC OF ESTABLISHING POST-INDUSTRIAL SOCIETY AREAS KW economic diversification KW service sector share in the gross value added KW concept of three-sectoral structural dynamics KW postindustrial society KW sectoral tertiarization KW income level of population KW services expansion JO Services in Russia and abroad AU PEREPELKINA, E.V. AU PEREPELKIN, V.A. PY 2018 IS 11 PB Russian State University of Tourism and Service