Elem, T. R., I. C. Ogwude, C. C. Ibe, K. U. Nnadi, and Ejem Agwu Ejem. “Decoupling of Economic Activity and Freight Transport Volume: An Evidence for Short Sea Shipping Future in the ECOWAS Sub-Region”. Journal of Sustainable Development of Transport and Logistics 5, no. 2 (November 16, 2020): 124–134. Accessed June 26, 2026. https://jsdtl.sciview.net/index.php/jsdtl/article/view/99.