A. R. Y. Ugli and S. S. Sirojidinovich, “The Methods for Improving the Efficiency of Flat Solar Collectors”, AJEMA, vol. 2, no. 4, pp. 159–166, Apr. 2024, Accessed: Aug. 26, 2026. [Online]. Available: https://grnjournal.us/index.php/AJEMA/article/view/4479