Tasevski, Velibor, and Vlatko Cingoski. “COMPARATIVE ENVIRONMENTAL ANALYSIS BETWEEN CONVENTIONAL AND COGENERATION GAS-FIRED CENTRAL HEATING SYSTEMS”. ETIMA 2, no. 1 (March 13, 2024): 32-43. Accessed November 21, 2024. https://js.ugd.edu.mk/index.php/etima/article/view/6439.