1. ISO/IEC Guide 99:2007, International Vocabulary of Metrology: Basic and General Concepts and Associated Terms (VIM 3).
2. RMG 29-99, GSI. Metrology: Main Terms and Determination.
3. Mutual Recognition of National Measurement Standards and of Calibration and Measurement Certificated Issued by National Metrology Institutes, Paris:BIPM (1999).
4. ISO/IEC 17025:2005, General Requirements for the Competence of Testing and Calibration Laboratories.
5. EUROMET Guide 6:2001, EUROMET Traceability.