ELRYAH, Y.; SIDDIG, A. Trade Policy and Productivity Growth: Why Do Sudanese Manufacturing Firms Export Less. Economics & Management Information, [S. l.], v. 3, n. 1, p. 1–16, 2024. DOI: 10.62836/emi.v3i1.98. Disponível em: https://ojs.sgsci.org/journals/emi/article/view/98. Acesso em: 3 apr. 2025.