[7] Bronnen: Institute of Shipping Economics and Logistics (ISL) Bremen, Jaarboek en verschillende nummers van FOCUS 1999, ISL Merchant Fleet Data Base (overzichten op basis van kwartaalbijwerkingen, van LMIS); Institute of Shipping Analysis (ISA), Gothenburg; DG TREN Statistisch Zakboek.
[7] Sources of data: Institute of Shipping Economics and Logistics (ISL) Bremen, Yearbook and various issues of FOCUS 1999, ISL Merchant Fleet Data Base (aggregates based on quarterly updates from LMIS); Institute of Shipping Analysis (ISA), Gothenburg; DG TREN Statistics Pocket Book.