Boudiaf, Ilyes, Samir Djadli, and Moncef Chorfi. “Analyzing Competitive Advantage Indicators Among Telecom Operators in Algeria: A Comparative Study”. Dirassat Journal Economic Issue 13, no. 1 (January 18, 2022): 225-241. Accessed July 22, 2024. http://journals.lagh-univ.dz/index.php/djei/article/view/1702.