1. ISO/IEC Guide 99: International vocabulary of basic and general terms in metrology (2007)
2. ISO/IEC Guide 98-3: Uncertainty of measurement—Part 3: Guide to the expression of uncertainty in measurement (GUM: 1995) (2008)
3. EAL-R2: Expression of the uncertainty of measurement in calibration (1997)
4. DIN 1319-3: Auswertung von Messungen einer einzelnen Messgröße—Messunsicherheit (1996)
5. Kessel, W.: European and international standards for statements of uncertainty. Eng. Sci. Educ. J. 7, 201–207 (1998)