1. Axis Wind Turbines," Renewable Energy, Vol.35, 2010, pp.2102-2113.
2. Electronics and Communication Engineering, Vol 4, 2019, pp.1-12.
3. Laboratory, TP-442-7109, January 1995.
4. Laboratory, SR-440-6918, January 1997.
5. Laboratory, SR-440-6919, January 1997.