JOURNAL SYSTEME. 12 - ANNOUNCEMENT. Africa Development, [S. l.], v. 8, n. 2, 1983. DOI: 10.57054/ad.v8i2.3220. Disponível em: https://www.journals.codesria.org/index.php/ad/article/view/3220. Acesso em: 6 aug. 2025.