TY JOUR TI RESULTS OF APPROBATION OF THE METHODOLOGY FOR ASSESSING THE EFFICIENCY OF THE MANAGEMENT OF INVESTMENT ACTIVITIES OF ENTERPRISES IN THE SPHERE OF PUBLIC CATERING SERVICES KW investments KW investment activity KW management KW efficiency KW public catering services KW enterprise KW development KW evaluation KW methodology JO Trade, service, food industry AU Magirovsky, D.V. PY 2023 IS 3 PB Siberian Federal University