Süveges, Gábor Béla, and Beatrix Varga. “Analysis of the Energy Efficiency of District Heat Suppliers in Hungary Through Network Losses”. European Journal of Economics and Business Studies 8, no. 3 (December 28, 2022): 7–7. Accessed October 16, 2026. https://mentisia.org/index.php/ejes/article/view/2739.