1. Guide to the Expression of Uncertainty in Measurement (ISO), Geneva, 1995.
2. ISO/IEC 17025, General requirements for the competence of calibration and testing laboratories (ISO), Geneva, 2005.
3. Joint Committee for Guides in Metrology, International vocabulary of basic and general terms in metrology (ISO), Geneva, third ed., 2007.
4. ISO 5725-1, Accuracy (trueness and precision) of measurement methods and results—Part 1: General principles and definitions (ISO), Geneva, 1994.
5. ISO 11648-1, Statistical aspects of sampling from bulk materials—Part 1: General principles (ISO), Geneva, 2003.