Adil, Elkrail, Kheir Omer, Shu Longcang, and Hao zenchun. “Hydrogeologic and Hydrochemical Investigation of Aquifers in Semi-Rid Area, Central Sudan”. Malaysian Journal of Science 22, no. 2 (August 28, 2003): 105–112. Accessed November 20, 2024. https://samudera.um.edu.my/index.php/MJS/article/view/8524.