Ostapenko O. SPHERES OF ENERGY EFFICIENT OPERATION OF ENERGY SUPPLY SYSTEMS WITH COGENERATION-HEAT PUMP INSTALLATIONS АND PEAK SOURCES OF HEAT IN HEAT SUPPLY SYSTEMS. SWVNTU [інтернет]. 22, Березень 2017 [цит. за 21, Червень 2026];(4). доступний у: https://works.vntu.edu.ua/index.php/works/article/view/487