1. Evaluation of measurement data. Guide to the Expression of Uncertainty in Measurement. Joint Committee for Guides in Metrology–JCGM 100. 2008 (ISO/IEC Guide 98–3). http://www.iso.org/sites/JCGM/GUM-introduction.htm
2. EURACHEM/CITAC Guide, Quantifying Uncertainty in Analytical measurement, 3rd edition, 2012. https://www.eurachem.org/images/stories/Guides/pdf/QUAM2012_P1.pdf
3. Ellison SLR. Uncertainty in chemical measurement. In: Ciarlini P, Cox MG, Pavese F, Richter D, editors. Advanced Mathematical Tools in Metrology III. Singapore: World Scientific; 1997. pp. 56-67
4. Ellison SLR, Wegscheider W, Williams A. Measurement uncertainty. Analytical Chemistry. 1997;1:607-613
5. Ellison SLR, Barwick VJ. Using validation data for ISO measurement uncertainty estimation. Part 1. Principles of an approach using cause and effect analysis. The Analyst. 1998;123:1387-1392