PolivyanchukA., SmirnyM., KaslinO., SkuridinaO., KovalenkoY., and BeketovV. 2019. “CREATION AND EXPERIMENTAL TESTING UNIVERSAL SYSTEM OF ENVIRONMENTAL DIAGNOSTICS HEAT ENGINES AND BOILER INSTALLATIONS”. Municipal Economy of Cities 3 (149), 77-82. https://khg.kname.edu.ua/index.php/khg/article/view/5419.