TY JOUR TI Innovative Vectors of Development of Services in the Market of Sanatorium and Resort Complexes KW positioning of companies in the field of recreational services KW specifics of the manifestation KW registration and use of services KW positioning diagnostics JO Scientific Research and Development. Economics of the Firm AU Petrova, T.V. PY 2021 IS 9 PB INFRA-M Academic Publishing LLC.