1. ISO/IEC 17025 (2004) General requirements for the competence of testing and calibration laboratories. International Organization for Standardization, Geneva
2. ISO 10576-1 (2003) Statistical methods—Guidelines for the evaluation of conformity with specified requirements. International Organization for Standardization, Geneva
3. ISO/IEC Guide 99 (2007) International vocabulary of metrology, basic and general concepts and associated terms, VIM, 3rd edn. International Organization for Standardization, Geneva
4. Thompson M, Ellison SLR, Wood R (2006) Pure Appl Chem 78:145–196
5. ISO 13528 (2005) Statistical methods for use in proficiency testing by interlaboratory comparisons. International Organization for Standardization, Geneva