Mathys, C. (Ed.) (2017). Economic importance of the Belgian ports: Flemish maritime ports, Liège port complex and the port of Brussels - Report 2015. Nationale Bank van België Working Paper Documents, 321. National Bank of Belgium: Brussels. 71 pp., meer
Mathys, C. (2012). Economic importance of the Belgian ports: Flemish maritime ports, Liège port complex and the port of Brussels: Report 2010. Nationale Bank van België Working Paper Documents, 225. National Bank of Belgium: Brussels. 92 pp., meer
Mathys, C. (2011). Economic importance of the Belgian ports: Flemish maritime ports, Liège port complex and the port of Brussels: Report 2009. Nationale Bank van België Working Paper Documents, 215. National Bank of Belgium: Brussels. 91 pp., meer
Mathys, C. (2011). Economic importance of the Belgian ports: Flemish maritime ports, Liège port complex and the port of Brussels - Report 2009. Nationale Bank van België Working Paper Documents, 215. National Bank of Belgium: Brussels. 91 pp., meer
Mathys, C. (2010). Economisch belang van de Belgische havens: Vlaamse zeehavens, en Luiks havencomplex en haven van Brussel: Verslag 2008. Nationale Bank van België Working Paper Documents, 192. Nationale Bank van België: Brussel. 92 pp., meer
