Mohammad Hamdoon, Omar. “A Review of Solar Air Heaters: Techniques for Thermal Performance Enhancement”. Al-Rafidain Engineering Journal (AREJ) 25, no. 2 (December 1, 2020): 46–59. Accessed August 7, 2025. https://ojs.uomosul.edu.iq/index.php/arej/article/view/26875.