Hussein, M. F., and H. H. Jasim. “Analysis of the Optimal Performance Point Concerning Ambient Temperature and Irradiance for an Off-Grid System in Comparison to Standard Conditions in a PV Power System”. Journal of Environmental and Geographical Studies, vol. 4, no. 3, Aug. 2025, pp. 1-17, doi:10.58425/jegs.v4i3.401.