Chepurnyy, Marko, Stanislav Tkachenko, і Olga Kutsak. «IMPROVEMENT OF HEATING PLANT OPERATION EFFICIENT DUE TO CONTACT WASTE HEAT BOILERS AND HEAT PUMP EQUIPMENT». Scientific Works of Vinnytsia National Technical University, no. 2 (Листопад 30, 2015). дата звернення Червень 20, 2026. https://works.vntu.edu.ua/index.php/works/article/view/218.