TY JOUR TI EFFICIENCY OF BUSINESS PROCESSES OF CATERING ORGANIZATIONS: ESSENCE, GENESIS AND APPROACHES KW economic efficiency KW business process KW process approach KW business process efficiency KW theoretical concepts of efficiency KW economic categories JO Trade, service, food industry AU Boev, V.S. AU Cheremnykh, D.A. PY 2026 IS 6 PB Siberian Federal University