1. L.M. Unger, D.K. Trubey, Speficic Gamma-Ray Dose Constants for Nuclides Important to Dosimetry and Radiological Assessment, Oak Ridge Laboratory ORNL/RSIC-45/R1 (1982), http://web.ornl.gov/info/reports/1982/3445603573381.pdf . Accessed 14 Sep 2015
2. International Commission on Radiation Units and Measurements (ICRP), The 2007 Recommendations of the International Commission on Radiological Protection. ICRP Publication 103. Ann. ICRP 37 (2–4)
3. A.F. Herbert, Introduction to Radiological Physics and Radiation Dosimetry (Wiley-VCH, New York, 1986)
4. National Council on Radiation Protection and Measurements (NCRP), Publication 160, Fig 1.1
5. Exposures of the Public and Workers from Various Sources of Radiation, Annex B to Volume I of the 2008 United Nations Scientific Committee on the Effects of Atomic Radiation Report to the General Assembly, Sources and Effects of Ionizing Radiation, Table 12, available on the UNSCEAR 2008 Report vol. I, www.unscear.org/unscear/en/publications/2008_1.html . Accessed 27 Aug 2015