NZE, Obiageli N.; OKEUDO, Geraldine N.; EJEM, Ejem Agwu. 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, nov. 2021. ISSN 2520-2979. Available at: <https://jsdtl.sciview.net/index.php/jsdtl/article/view/120>. Date accessed: 20 jan. 2022. doi: http://dx.doi.org/10.14254/jsdtl.2021.6-2.5.