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المصادر:
1- هنا
2- هنا
3- Tony Burton، Nick Jenkins، David Sharpe، Ervin Bossanyi، “Wind Energy Handbook”، John Wiley & Sons، 2011
4- Robert Gasch، “Wind Power Plants – (Fundamentals، design، construction، and operation”، 2nd edition، Springer، 2012. 
5- WO1992012343، Wind Turbine، PatentScope Website، 1992.