1. AWEA (1997) International wind energy incentives. American Wind Energy Association, Washington D.C.
2. AWEA (2002) The most frequently asked questions about wind energy. American Wind Energy Association, Washington D.C.
3. Fortunato B, Mummolo G, Cavallera G (1997) Economic optimization of wind power plants for isolated locations. Solar Energy 60(6):347–358
4. http://www.energy.iastate.edu
5. http://www.repp.org/repp_pubs/articles/resRpt11/preleasesubsidies.pdf