« Modeling and Forecasting Volatility of Qatar Stock Exchange in light of the blockade and Covid-19 crises Using GARCH Models » (2025) Journal of North African Economies, 18(30), p. 43–60. Disponible sur: https://journals.univ-chlef.dz/index.php/renaf/article/view/266 (Consulté le: 22 octobre 2026).