Sirojiddin Saydullaev (2024) “THE IMPORTANCE OF USING COMBINATION SYSTEMS TO INCREASE ENERGY EFFICIENCY IN HEATING SYSTEMS”, Web of Technology: Multidimensional Research Journal, 2(12), pp. 126–130. Available at: https://webofjournals.com/index.php/4/article/view/2550 (Accessed: 9 March 2025).