Yahia Mida. 2025. “The Impact of Marketing Innovation on Achieving the Competitive Advantage of Economic Institutions- A Case Study of Communication Institutions (Mobilis, Djazzy, Ooredoo) Agencies in Wilaya of El Oued-”. Journal of Informatics Education and Research 5 (2). https://jier.org/index.php/journal/article/view/2646.