Sharif M, Alowa M. 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 2026 Aug. 3];17(1):481-6. Available from: https://sebhau.edu.ly/journal/jopas/article/view/469