1. Model and full scale high-lift wing wind tunnel experiments dedicated to airframe noise reduction
2. Airbus Company: Airbus Market Forecast 2011-2030, online pdf, http://www.airbus.com/company/market/forecast/passenger-aircraft-market-forecast/Airbus\_GMF\_2011-2030\_delivering\_the\_future\_-\_full\_book.pdf (accessed 09 January 2012)
3. Boeing Company: Boeing Current Market Outlook 2011-2030, online version, http://www.boeing.com/commercial/cmo/ (accessed 12 January 2012)