• The Baltic Sea as a maritime highway in international multimodal transportDaduna, Joachim R.; Prause, Gunnar KlausOperations Research Proceedings 2015 : selected papers of the International Conference of the German, Austrian and Swiss Operations Research Societies (GOR, ÖGOR, SVOR/ASRO), University of Vienna, Austria, September 1-4, 20152017 / p. 189-194 https://doi.org/10.1007/978-3-319-42902-1_25