Chepurnyi, M. M., N. V. Pishenina, and O. V. Kutsyk. “Modern Problems of Central Heating”. Visnyk of Vinnytsia Politechnical Institute, no. 5 (November 12, 2010): 68–71. Accessed July 16, 2024. https://visnyk.vntu.edu.ua/index.php/visnyk/article/view/1640.