Fialko, N.M., R.O. Navrodska, S.I. Shevchuk, and G.O. Presich. “THE ANALYSIS OF PROTECTION SYSTEMS EFFICIENCY OF GAS-EXHAUST DUCTS IN BOILER INSTALLATIONS BY USING HEAT RECOVERY TECHNOLOGIES”. Thermophysics and Thermal Power Engineering 38, no. 1 (February 20, 2016): 47-53. Accessed January 29, 2022. http://ihe.nas.gov.ua/index.php/journal/article/view/233.