AIB, Ouided. Competence to conclude public contracts under Presidential Decree 15/247 on Public contrats and Public Service Delegations. Journal of Human Sciences , Constantine, Algeria, v. 34, n. 4, p. 181–191, 2023. DOI: 10.34174/rbcksp95. Disponível em: https://revue.umc.edu.dz/h/article/view/5214. Acesso em: 13 oct. 2026.