Elem, T. R., Ogwude, I. C., Ibe, C. C., Nnadi, K. U. and Ejem, E. A. (2020) “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(2), pp. 124–134. doi: 10.14254/jsdtl.2020.5-2.11.