1. History of wind energy;Pasqualetti,2004
2. Ecological impacts of wind energy development on bats: questions, research needs, and hypotheses;Kunz;Front Ecol Environ,2007
3. Global Wind Energy Council (GWEC) (2013). GWEC Global Wind Statistics 2012. 〈http://www.gwec.net/wp-content/uploads/2013/02/GWEC-PRstats-2012_english.pdf〉; [accessed 21.02.13].
4. UPI. EU wind power capacity reaches 100GW. 〈http://www.upi.com/Business_News/Energy-Resources/2012/10/01/EU-wind-power-capacity-reaches-100GW/UPI-52431349087400/〉; 2012 [accessed 02.04.13].
5. Clean Technica. US Reaches 50GW of Wind Energy Capacity in Q2 of 2012. 〈http://cleantechnica.com/2012/08/10/us-reaches-50-GW-of-wind-energy-capacity-in-q2-of-2012/#gsc.〉tab=0; 2012 [accessed 02.04.13].