TY JOUR TI ORGANIZATIONAL AND ECONOMIC ASPECTS OF THE FUNCTIONING OF SMALL BUSINESSES IN THE FIELD OF CATERING KW service sector KW small business KW catering KW development KW efficiency KW digitalization KW sustainability KW organizational and economic mechanism KW entrepreneurship. JO Russian Journal of Management AU Glinskaya, O.S. AU Nabieva, A.R. AU Belozorov, A.N. PY 2026 IS PB Publishing Center RIOR