1. “FAA Aerospace Forecast Fiscal Years 2014–2034,” Federal Aviation Administration, TR OK-14-0723, Washington, D.C. 2014.
2. “Current Market Outlook, 2013–2032,” Boeing Commercial Airplanes, 239448 6/12, Seattle, Washington, 2013.
3. “Global Market Forecast 2013–2032,” Airbus, TR, 2013, http://www.airbus.com/company/market/forecast [accessed 01 May 2014].
4. SpringerT. “Environmentally Responsible Aviation Project: Integrated Systems Research Program,” NASA Aeronautics Research Institute (NARI), NASA Ames Research Center, Moffitt Field, CA, 2013.
5. SpringerT. “The Fixed Wing Project,” NASA Aeronautics Research Institute (NARI), NASA Ames Research Center, Moffitt Field, CA, 2013.