1. Hupe J, Secretray C (2016) Committee on aviation environmental protection (CAEP). International Civil Aviation Organization
2. Solar Impulse SA. http://www.solarimpulse.com/adventure
3. Joubert E (2016) Electric flight in Airbus Group why the E-Fan adventure? Airbus Group
4. Bradley MK, Droney CK (2011) Subsonic ultra green aircraft research: phase I final report. NASA. NASA/CR–2011-216847
5. Mattingly JD, Heiser WH, Daley DH (2002) Aircraft engine design. American Institute of Aeronautics & Astronautics