Maazouz, moukhtar, and Rachid Allab. “ISO 14001 Environmental Management System Approvals In the Economic Institutions in Algeria”. Dirassat Journal Economic Issue 7, no. 2 (June 1, 2016): 201-219. Accessed May 9, 2025. http://journals.lagh-univ.dz/index.php/djei/article/view/373.