KOHLER, M.; KHUMALO, T. Upgrading Export Structure In Sub-Saharan Africa. International Business & Economics Research Journal (IBER), [S. l.], v. 14, n. 2, p. 269–286, 2015. DOI: 10.19030/iber.v14i2.9164. Disponível em: https://clutejournals.com/index.php/IBER/article/view/9164. Acesso em: 17 jul. 2024.