محمد الأمين الشريف و محمد إبراهيم علوه. Comparison of the values calculated in the mathematical models used to estimate the amount of solar radiation falling on a horizontal surface with the measured values of the city of Sabha. JOPAS [Internet]. 2018 Jul. 30 [cited 2024 Nov. 24];17(1). Available from: https://sebhau.edu.ly/journal/jopas/article/view/469