1. Guide to the Expression of Uncertainty in Measurement. International Organization for Standardization: Geneva, 1993.
2. Guidelines for Evaluating and Expressing the Uncertainty of NIST Measurement Results. NIST Technical Note 1297. US Government Printing Office: Washington DC, 1994.
3. International Vocabulary of Basic and General Terms in Metrology (VIM) (2nd edn.) BIPM/IEC/IFCC/ISO/IUPAC/IUPAP/OIML, International Organization for Standardization (ISO): Geneva, 1993.
4. Standard reference materials for cements