1. Commission of the European Communities. Council Directive 97/43/Euratom (Medical Exposure Directive) of June 30, 1997, on health protection of individuals against the dangers of ionising radiation in relation to medical exposure. Official Journal of the European Communities, No. L 180, p. 22 (1997).
2. European Commission. European guidelines on quality criteria for diagnostic radiographic images. Report EUR 16260EN (Luxembourg: Office for Official Publications of the European Communities) (1996).
3. European Commission. European guidelines on quality criteria for diagnostic radiographic images in paediatrics. Report EUR 16261EN (Luxembourg: Office for Official Publications of the European Communities) (1996).
4. President of the Republic Decree 187/2000. Implementation of Directive 97/43/EURATOM on health protection of individuals against the dangers of ionising radiation in relation to medical exposure. Office for Laws and Decrees Publications of the Ministry of Justice, Rome (in Italian) (2000).
5. European Commission. The 1991 CEC trial on quality criteria for diagnostic radiographic images: detailed results and findings. Report EUR 16635EN (Luxembourg: Office for Official Publications of the European Communities) (1996).