1. S. Ramanujan, Emirates skycargo works with dubai start-up for efficient and transparent sourcing of seafood, 2019, https://www.emirates.com/media-centre/emirates-skycargo-sees-a-successful-summer-season-for-transporting-perishables-and-pharma-through-dubai/.
2. C. Dejohn, A. Wolbrink, J. Larcher, In-flight medical incapacitation and impairment of u.s. airline pilots: 1993 to 1998, Tech. rep., FAA Civil Aerospace Medical Institute, Oklahoma City, October 2004.
3. Clinical aspects of inflight incapacitations in commercial aviation;Martin-Saint-Laurent;Aviation Space Environ. Med.,1990
4. Code of federal regulations, title 49, transportation, 2012.
5. Allowable carbon dioxide concentration in transport category airplanes, Tech. rep., Federal Aviation Administration, Department of Transportation, December 1996.