TY CONF TI USE OF GRAPHICAL TOOLS TO DISPLAY INFORMATION ABOUT THE IMPACT OF CO2 EMISSIONS IN RUSSIAN FEDERATION REGIONS KW bar chart KW correlation matrix KW bubble chart JO PROBLEMS AND PROSPECTS IN SYSTEMS AND PROCESS MODELING AU Kartashov, A.O. AU Ten, R.V. PY 2026 PB FSBE Institution of Higher Education Voronezh State University of Forestry and Technologies named after G.F. Morozov