1. ICRP Publication 103. The 2007 recommendations of the International Commission on Radiological Protection;ICRP;Ann. ICRP,2007
2. International Atomic Energy Agency. Radiation protection and safety of radiation sources: international basic safety standards. IAEA Safety Standards Series No. GSR Part 3. IAEA, Vienna. 2014 ISBN: 978–92–0–135310–8.
3. European Council Directive 2013/59/Euratom on basic safety standards for protection against the dangers arising from exposure to ionising radiation and repealing Directives 89/618/Euratom, 90/641/Euratom, 623 96/29/Euratom, 97/43/Euratom and 2003/122/Euratom. Official Journal of the European Union 2014; 57:1-73L13.
4. ICRP publication 135. Diagnostic reference levels in medical imaging;ICRP;Ann ICRP,2017
5. American Association of Physicist in Medicine. The measurement, reporting, and management of radiation dose in CT. Report of AAPM Task Group 23 AAPM report no. 96, 2008 ISBN: 978-1-888340-73-0.