1. http://www.ip-hercules.com, High Efficiency R&D on Combustion with Ultra Low Emissions for Ships, EU-IP Project, Sixth Framework Program, Priority 1.6.2, Sustainable Surface Transport, TIP3-CT-2003-506676, (26.11.2008), Publishable Final Activity Report (Ed. Nikolaos P. Kyrtatos, ULEME E.E.I.G, npk@uleme.com).
2. http://www.merenkulkulaitos.fi, Finnish Maritime Administration, Shipping Statistics, (11.11.2008).
3. Calculation system for the Finnish waterway traffic emissions — MEERI 2003;Mäkelä,2004
4. PROMOTOR Final Seminar, Separate Power Point Presentations by the Participating Projects, Seminar organized by Finnish Funding Agency for Technology and Innovation, 3rd February, Helsinki,2004
5. NO emission formation in marine diesel engines — towards a quantitative understanding;Kilpinen,2003