YAHIA MIDA. 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, [S. l.], v. 5, n. 2, 2025. Disponível em: https://jier.org/index.php/journal/article/view/2646. Acesso em: 7 mar. 2026.