1. ISO/IEC 17000 (2004) Conformity assessment—vocabulary and general principles. ISO, Geneva, Switzerland
2. Citac Eurachem Guide (2002) Guide to quality in analytical chemistry: an aid to accreditation
3. ISO/IEC 17025 (2005) General requirements for the competence of testing and calibration laboratories. ISO, Geneva, Switzerland
4. ISO/IEC 17011 (2004) Conformity assessment—general requirements for accreditation bodies accrediting conformity assessment bodies. ISO, Geneva, Switzerland
5. Dizadji F, Anklam E (2004) Accred Qual Assur 9:317–322