Fettouh, Khaled. “Competencies Management Functions and Their Impact on Improving Job Performance A Field Study of a Sample of Institutions in Tlemcen. ”. Dirassat Journal Economic Issue 13, no. 1 (January 18, 2022): 37-54. Accessed April 28, 2024. http://journals.lagh-univ.dz/index.php/djei/article/view/1672.