Karfoul, Rizek. “The Calculation of the Hourly Direct Solar Radiation Incident on Tilted, Horizontal and Vertical Surfaces in Lattakia City”. Tishreen University Journal -Basic Sciences Series 41, no. 3 (June 30, 2019). Accessed November 24, 2024. https://journal.tishreen.edu.sy/index.php/bassnc/article/view/8810.