“Factors Determining the Exchange Rate in the Unofficial Market and Their Impact on Domestic Investment in the Libyan Economy: An Econometric Study Using the ARDL Model During the Period (1990-2025)”. Comprehensive Journal of Science, vol. 11, no. ملحق 41, Aug. 2026, pp. 1317-2, https://doi.org/10.65405/fn83w754.