Saouli Y. Study of the reality of economic diversification in Algeria for the period 2000-2022, using the Herfindahl-Hirschman index. IJEP [Internet]. 2025 Apr. 21 [cited 2026 Jul. 2];19(4):1494-506. Available from: https://ijeponline.lingcure.org/index.php/journal/article/view/937