Legal Information Institute [online]. Cornell Law School [cit. 2022-04-02]. Dostupné online. (anglicky)
faa.gov
ROTORCRAFT FLYING HANDBOOK [online]. U.S. Department of Transportation FEDERAL AVIATION ADMINISTRATION, 2000 [cit. 2022-04-02]. Dostupné online. (anglicky)
Computer Testing Supplement for Inspection Authorization [online]. U.S. Department of Transportation FEDERAL AVIATION ADMINISTRATION, 2008 [cit. 2022-04-02]. Dostupné online. (anglicky)
nasa.gov
ntrs.nasa.gov
YEO, Hyeonsoo; JOHNSON, Wayne. Aeromechanics Analysis of a Compound Helicopter [online]. NASA [cit. 2022-04-03]. Dostupné online. (anglicky)