“Analysis of the Impact of Economic Crises on the Value of Shares in Islamic and Usurious Banks: A Comparative Study of the Performance of the Two Financial Systems in the Face of Economic Fluctuations for the Period from 2017 to 2021”. 2025. Journal of Accounting and Financial Studies ( JAFS ) 20 (73): 303-11. https://doi.org/10.34093/hq6e2f30.