Khaled, Semyan, and Omar Ali. “Numerical and Experimental Investigation for Hybrid Photovoltaic/Thermal Collector System in Duhok City”. Journal of Environmental Engineering and Landscape Management 28, no. 4 (December 15, 2020): 202-212. Accessed April 20, 2024. https://journals.vilniustech.lt/index.php/JEELM/article/view/13691.