"ACCURACY ASSESSMENT OF SRTM and ASTER DIGITAL ELEVATION MODELS (COVERING SOME PARTS OF SUDAN)". University of Khartoum Engineering Journal 11, no. 2 (سبتمبر 5, 2022). تاريخ الوصول يوليو 8, 2026. https://onlinejournals.uofk.edu/kuej/article/view/855.