1. 1989.Maritime Transport, 115Paris: OECD. See OECD 1990
2. Sutcliffe, P. and Garrat, M. Container traffics in Europe. Proceedings of the 2nd Roundtable. European Short Sea Shipping, pp.370London: LLP. Although feedering andmain carriage can often be co-existing thus making the analysis more complicated. For e.g. the case of Europe, see