1. Global Wind Energy Outlookhttp://www.gwec.net/wp-content/uploads/2014/10/GWEO2014_WEB.pdf
2. Windicator: Global Total Hits 400 GW as China Continues to Push Aheadhttp://www.windpowermonthly.com/article/1365877/windicator-global-total-hits-400gw-china-continues-push-ahead
3. The European offshore wind industry key trends and statistics 2015http://www.ewea.org/fileadmin/files/library/publications/statistics/EWEA-European-Offshore-Statistics-2015.pdf
4. A BTM Navigant Wind Report. World Wind Energy Market Update 2015. International Wind Energy Development: 2015–2019,2015
5. 2015 Annual Report Information (P. 27) about World Leading Construction and Operations of Offshore Windhttps://assets.dongenergy.com/DONGEnergyDocuments/com/Investor/Annual_Report/2015/dong_energy_annual_report_en.pdf