An Experimental Comparison Between Fixed and Single-Axis Tracking Photovoltaic Solar Panel Performance: Zakho City as Case Study. Al-Rafidain Engineering Journal (AREJ), [S. l.], v. 28, n. 1, p. 272–279, 2023. DOI: 10.33899/rengj.2022.136292.1204. Disponível em: https://rengj.uomosul.edu.iq/index.php/rengj/article/view/30836. Acesso em: 26 jun. 2026.