1. United Nations Scientific Committee on the Effects of Atomic Radiation UNSCEAR (2010). United nations scientific committee on the effects of atomic radiation 2008 report: sources and effects of ionizing radiation. Volume I, Annex A: Medical radiation exposures (2008).
2. Hart D. Wall B. F. Hillier M. C. Shrimpton P. C. Frequency and collective dose for medical and dental x-ray examination in the UK 2008 Review. Report HPA-CRCE-012, Chilton (2010).
3. Hughes J. S. O'Riordan M. C. Radiation exposure of the UK population–1993 review. Chilton, NRPB-R263 (1993).
4. Evaluation of Patient Exposure in Computerised Tomography in Poland
5. United Nations Scientific Committee on the Effects of Atomic Radiation. UNSCEAR (2000) report to the General Assembly, Annex D: Medical radiation exposures. United Nations (2000).