1. Bačkalov, I., Kalajdžić, M., Momčilović, N. and Simić, A. (2014) E-type self-propelled vessel: A novel concept for the Danube. Paper presented at the EIWN 2014 conference, September 10–12, Budapest, Hungary.
2. Beelen, M. (2011) Structuring and modelling decision making in the inland navigation sector. PhD Thesis, University of Antwerp, Antwerp.
3. Beuthe, M., Jourquin, B., Geerts, J. and Koul à Ndjang’ Ha, C. (2001) Freight transportation demand elasticities: A geographic multimodal transportation network analysis. Transportation Research Part E: Logistics and Transportation Review 37 (4): 253–266.
4. Blauwens, G., de Baere, P. and Van de Voorde, E. (2012) Transport Economics, 5th edn. Berchem, Belgium: uitgeverij De Boeck nv.
5. Blauwens, G., Vandaele, N., Van de Voorde, E., Vernimmen, B. and Witlox, F. (2006) Towards a modal shift in freight transport? A business logistics analysis of some policy measures. Transport Reviews 26 (2): 239–251.