1. Global Wind Energy Council Global wind power boom despite economic woes Press Release 3/2/2010 2010
2. Global Wind Energy Council European offshore wind power market grew by 54% in 2009 Press Release 19/1/2010 2010
3. US Department of Energy 20% wind energy by 2030-increasing wind energy's contribution to the US energy supply DOE/GO-102008-2567 2008
4. Windpower Monthly 2009
5. Emerging Energy Research Wind turbine supply train strategies 2009-2020 2009