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References

  1. United Nations Scientific Committee on the Effects of Atomic Radiation (UNSCEAR), Sources and Effects of Ionizing Radiation, Annex B Exposures from natural radiation sources, 2000.
  2. International Commission on Radiological Protection (ICRP), 1990 Recommendations of the International Commission on Radiological Protection, ICRP Publication 60, 1991.
  3. Civil Aviation Department, Cosmic Radiation, Flight Operations Notice 05/2002, 2002.