SYSTEME, Journal. 9 - Focus on Research and Training Institutes . Africa Development, [S. l.], v. 6, n. 2, 1981. DOI: 10.57054/ad.v6i2.3318. Disponível em: https://www.journals.codesria.org/index.php/ad/article/view/3318. Acesso em: 6 aug. 2025.