Fialko, N., R. Navrodskaya, A. Stepanova, and G. Gnedash. “EFFICIENCY OF ELEMENTS OF COMBINED HEATUTILISATION SYSTEM FOR HEATING OF WATER AND COMBUSTION AIR”. Thermophysics and Thermal Power Engineering 37, no. 5 (November 5, 2017): 75-83. Accessed July 28, 2026. https://ihe.nas.gov.ua/index.php/journal/article/view/125.