1. BIPM, International equivalence of measurements: the CIPM MRA, 2016. Available Online from: http://www.bipm.org/en/cipm-mra/.
2. BIPM, OIML, ILAC and ISO, Joint BIPM, OIML, ILAC and ISO declaration on metrological traceability, 2017. Available Online from: http://www.bipm.org/en/worldwide-metrology/bipm-oiml-ilac-iso_joint_declaration.html.
3. Measurement uncertainty and traceability;Cox;Meas. Sci. Technol.,2006
4. The evaluation of key comparison data;Cox;Metrologia,2003
5. Consensus building for interlaboratory studies, key comparisons, and meta-analysis;Koepke;Metrologia,2017