Maaradj, houari, and Kamel Rezig. “ENTERPRISE INFORMATION PORTALS VS. ENTERPRISE KNOWLEDGE PORTALS”. Dirassat Journal Economic Issue 1, no. 1 (January 1, 2010): 1-14. Accessed May 17, 2024. http://journals.lagh-univ.dz/index.php/djei/article/view/528.