1. ISO 5725, parts 1–6:1994–2002, Accuracy (trueness and precision) of measurement methods and results, ISO, Geneva
2. ISO 4259:2006—Petroleum products—determination and application of precision data in relation to methods of test, ISO, Geneva
3. ISO/IEC Guide 98-3:2008, Uncertainty of measurement—part 3: guide to the expression of uncertainty in measurement, ISO, Geneva
4. NEN 7779 (2008), Environment—measurement uncertainty, NEN, Delft, Netherlands
5. AMC technical brief (2003) No. 15, Is my uncertainty estimate realistic? Royal Society of Chemistry. http://www.rsc.org