JOURNAL SYSTEM. AD, Volume 31, n° 4, 2006 - Full Issue. Africa Development, [S. l.], v. 31, n. 4, 2021. DOI: 10.57054/ad.v31i4.1247. Disponível em: https://www.journals.codesria.org/index.php/ad/article/view/1247. Acesso em: 5 aug. 2025.