1. ITOPF ITOPF Oil Spill Statistics 2010 http://www.itopf.com/information-services/data-and-statistics/statistics/
2. IMO International Convention for the Prevention of Pollution from Ships (MARPOL) 2011 http://www.imo.org/about/conventions/listofconventions/pages/international-convention-for-the-prevention-of-pollution-from-ships-(marpol).aspx
3. EU Legislations Waterborne Transport: Maritime Safety 2011 http://europa.eu/legislation_summaries/transport/waterborne_transport/index_en.htm