Navrodskaya, R., N. Fialko, G. Gnedash, and G. Sbrodova. 2017. “ENERGY-EFFICIENT HEAT RECOVERY SYSTEM FOR HEATING THE BACKWARD HEATING SYSTEM WATER AND BLAST AIR OF MUNICIPAL BOILERS”. Thermophysics and Thermal Power Engineering 39 (4), 69-75. https://doi.org/https://doi.org/10.31472/ihe.4.2017.10.