TY CONF TI BALANCES AND LOW-HEAT WOOD AS RENEWABLE ENERGY SOURCES KW wood KW balances KW ecology KW biofuels KW resources JO INDUSTRIAL THERMAL POWER ENGINEERING AU Govorukha, T.Y. AU Storodubtseva, T.N. AU Goptarev, S.M. PY 2026 PB FSBE Institution of Higher Education Voronezh State University of Forestry and Technologies named after G.F. Morozov