1. Global Wind Energy Council (GWEC) Global wind statistics 2010 2011
2. Reliability of wind turbine subassemblies;Tavner;IET Renewable Power Generation,2009
3. Beijing Goldwind Science & Creation Windpower Equipment Co., Ltd http://www.goldwind.cn
4. Voith Turbo GmbH & Co. KG http://www.voithturbo.de
5. Bosch Rexroth Limited http://www.boschrexroth.com