TY JOUR TI THE EFFICIENCY OF SERVICE SECTOR ORGANIZATIONS: THE ESSENCE AND APPROACHES KW efficiency KW genesis of efficiency KW enterprise efficiency KW veterinary services market KW household efficiency JO Trade, service, food industry AU Demchenko, M.V. AU Podueva, O.N. AU Veremeenko, O.S. AU Potekhin, P.D. PY 2025 IS 5 PB Siberian Federal University