Intissare, S., B. Salah, and L. Ramdane. “The Contribution of the Service Sector to Enhancing Added Value and Reducing Unemployment in Algeria: A Developmental Analytical Approach”. International Journal of Economic Perspectives, vol. 19, no. 4, Apr. 2025, pp. 1465-8, https://ijeponline.org/index.php/journal/article/view/970.