Determinants of Vertical and Horizontal Export Diversification: Evidences from Sub-Saharan Africa and East Asia. Ethiopian Journal of Economics, [S. l.], v. 17, n. 2, p. 1–56, 2009. Disponível em: https://ethiopianjournalofeconomics.org/index.php/EJE/article/view/82.. Acesso em: 24 jun. 2026.