Foreign exchange policies and the exchange rate between flotation and hypnosis in light of economic policies A case study of Sudan during the period (2004 -2014). Journal of Social Sciences, [S. l.], v. 5, n. 21, p. 276–303, 2021. Disponível em: https://journalsocialsciences.de/index.php/jss/article/view/282. Acesso em: 11 oct. 2026.