ِ Mahmoud Adel M, et al. “Vegetation Cover Assessment in Al-Jabal Al-Akhdar Region, Libya Using Selected Spectral Vegetation Indices”. Silphium Journal of Science and Technology, vol. 1, no. 1, Feb. 2022, pp. 22-34, https://j.istc.edu.ly/index.php/sjst/article/view/5.