Abderrahim Belbali, Abdessalam Belbali, Mohammed Amine Gasmi, Samir Ouldbahammou, Ali Yousfat, Ahmed Oukacha Azizi. “Measuring and Analyzing Economic Diversification Using the Herfindahl-Hirschman Index”. European Economic Letters (EEL) 14, no. 3 (October 30, 2024): 3025–3037. Accessed December 14, 2025. https://eelet.org.uk/index.php/journal/article/view/2078.