SYSTEM, Journal. 8 - CENTRE DE RECHERCHES EN ÉCONOMIE APPLIQUÉE D’ALGER - ALGÉRIE. Africa Development, [S. l.], v. 3, n. 1, 1978. DOI: 10.57054/ad.v3i1.3522. Disponível em: https://journals.codesria.org/index.php/ad/article/view/3522. Acesso em: 12 mar. 2025.