Chepurnui, Mark, Olga Kutsak, and Ilona Dymnich. “COMPARISON OF HEAT SUPPLY SYSTEM EFFICIENCY FROM HEATING BOILER AND HEAT PUMP PLANTS”. Scientific Works of Vinnytsia National Technical University, no. 4 (November 29, 2015). Accessed November 23, 2024. https://works.vntu.edu.ua/index.php/works/article/view/307.