NZE, O. N.; OKEUDO, G. N.; EJEM, E. A. Trend analysis of the productivity of Nigerian seaports. Journal of Sustainable Development of Transport and Logistics, [S. l.], v. 6, n. 2, p. 81–95, 2021. DOI: 10.14254/jsdtl.2021.6-2.5. Disponível em: https://jsdtl.sciview.net/index.php/jsdtl/article/view/120. Acesso em: 17 jun. 2026.