"Development of an Empirical Coefficient for the Short Circuit Current to Determine Soiling Effect on PV Performance". University of Khartoum Engineering Journal 7, no. 2 (أكتوبر 23, 2022). تاريخ الوصول يوليو 8, 2026. https://onlinejournals.uofk.edu/kuej/article/view/973.