FIALKO, N.; NAVRODSKA, R.; SHEVCHUK, S.; PRESICH, G. THE ANALYSIS OF PROTECTION SYSTEMS EFFICIENCY OF GAS-EXHAUST DUCTS IN BOILER INSTALLATIONS BY USING HEAT RECOVERY TECHNOLOGIES. Thermophysics and Thermal Power Engineering, v. 38, n. 1, p. 47-53, 20 fev. 2016.