د. عمران عباس يوسف, and د. سامي محمد إبراهيم. “The Determinants of Informal Dollarization in Sudan (2010-During Period (1995”. White Nile Journal for Studies and Research, no. 01 (March 1, 2013): 63–84. Accessed June 13, 2026. https://journals.wnu.edu.sd/index.php/wnjsr/article/view/243.