1. AVV, TNO-MEP, RIZA, MARIn, CE-Delft, Haskoning. Emissieregistratie en - Monitoring Scheepvaart. The Netherlands: DGG; 2003.
2. Commission launches strategy to reduce air pollution from ships,2002
3. Statistical trends in transport 1965–1992;ECMT-CEMT,1997
4. Emission from international sea transportation and environmental impact;Endersen;J Geophys Res,2003
5. Service contract on ship emissions: assignment, abatement and marketbased instruments;ENTEC,2005