Bodnar, Liliya, Dmytro Stepanov, і Roman Boychuk. «HEAT EXCHANGE INTENSIFICATION IN SMALL CAPACITY GAS-TUBE HOT-WATER BOILER». Scientific Works of Vinnytsia National Technical University, no. 3 (Листопад 25, 2015). дата звернення Червень 20, 2026. https://works.vntu.edu.ua/index.php/works/article/view/422.