TY JOUR TI METHODOLOGY OF DETERMINING THE BOUNDARIES OF THE SUBURBAN ZONE AS A KEY ELEMENT OF THE WATER-GREEN FRAME OF A GROUP OF PLANNED DEVELOPMENT SYSTEMS KW water and green frame KW urban planning system KW group association of urban planning systems KW GS Bolshoy Volgograd JO Bulletin of Belgorod State Technological University named after. V. G. Shukhov AU Prokopenko, V.V. PY 2026 IS 11 PB Belgorod State Technological University named after V.G. Shukhov