Mohamed, Elwasila Saeed Elamin. “Velocity of Money Income and Economic Growth in Sudan: Cointegration and Error Correction Analysis”. International Journal of Economics and Financial Issues 10, no. 2 (March 1, 2020): 87–98. Accessed November 23, 2024. https://econjournals.com/index.php/ijefi/article/view/8944.