FADL, Hassan Tawakul Ahmed. The role of time gaps in determining the causal relationship between exchange rate and foreign exchange reserve in Sudan using Granger causality for the period 1980-2017. Journal of Economic, Administrative and Legal Sciences, New Mexico, United States, v. 2, n. 11, p. 107–89, 2018. DOI: 10.26389/AJSRP.H050618. Disponível em: https://www.ajsrp.ojsexpert.com/index.php/jeals/article/view/668. Acesso em: 20 dec. 2025.