1. Eng WG. Survey on eye comfort in aircraft, I: flight attendants. Aviat Space Environ Med. 1979;50(4):401–404.
2. Committee on Airliner Cabin Air Quality, Commission on Life Sciences, Division on Earth and Life Studies, National Research Council.The Airliner Cabin Environment: Air Quality and Safety. National Academies Press, Washington DC,1986, p.190–207.
3. Sore eyes and travelers;Leggat;J Travel Med,1999
4. World Health Organization. Mode of travel: health considerations.
5. Changes in ocular and nasal signs and symptoms among air crew in relation to air humidification on intercontinental flights;Norbäck;Scand J Work Environ Health,2006