1. ISO/DTS 21748 Guide to the Use of Repeatability, Reproducibility and Trueness Estimates in Measurement Uncertainty Estimation,2003
2. EURACHEM/CITAC Guide: Quantifying Uncertainty in Analytical Measurement,2000
3. Guide to the Expression of Uncertainty in Measurement,1995
4. EA-4/16, EA Guidelines on the Expression of Uncertainty in Quantitative Testing,2004