1. BIPM IEC IFCC ISOI UPAC IUPAP OIML Guide to the expression of uncertainty in measurement, Geneva: ISO 1993
2. Joint Committee for the Guides in Metrology 100 Evaluation of measurement data - guide to the expression of uncertainty in measurement http://www.bipm.org/utils/common/documents/jcgm/JCGM_100_2008_E.pdf
3. Ellison SLR Rosslein M Williams A Eurachem/CITAC guide 2000
4. Elsevier Health Sciences;Hoffman,2012