TY JOUR TI COMPARATIVE ANALYSIS OF THE STATE OF RETAIL TRADE IN THE RUSSIAN FEDERATION AND KRASNOYARSK KRAI KW retail market KW comparative diagnostics KW market state KW trade concentration KW institutional structure KW infrastructure provision KW consumer activity KW spatial polarization KW trade service KW regional differentiation JO Trade, service, food industry AU Esina, O.N. AU Ardzhumanova, Z.V. PY 2026 IS 6 PB Siberian Federal University