1. International Organization for Standardization: Guide to the expression of uncertainty in measurement. Geneva, Switzerland: ISO 98. 1995, 2
2. International Organization for Standardization: International vocabulary of basic and general terms in Metrology (VIM). Geneva, Switzerland: ISO 99. 2007, 3
3. International Organization for Standardization: General Requirements for the Competence of testing and calibration laboratories. Geneva, Switzerland: ISO 17025. 2005
4. International Organization for Standardization: Guide to the Use of Repeatability, Reproducibility and Trueness Estimate in Measurement Uncertainty Estimation. Geneva, Switzerland: ISO 21748: 2003
5. Ellison SLR, Williams A: EURACHEM/CITAC Guide: Use of uncertainty information in compliance assessment. 2007, Cooperation on the International Traceability in Analytical Chemistry: Switzerland, First