TY JOUR TI FORMATION OF STRUCTURAL GRAPHS FOR SOLVING LOAD FLOW ANALYSIS IN THE PROBLEMS OF SECURITY OF HEAT SUPPLY SYSTEMS KW heating systems KW structural columns KW user subsystem KW reliability KW safety of operation. JO Modeling of systems and processes AU Mezentsev, A.. AU Sazonova, S.A. PY 2016 IS 8 PB FSBE Institution of Higher Education Voronezh State University of Forestry and Technologies named after G.F. Morozov