Time and Frequency Supplementary Guide for Appendices B and C of the CIPM MRA (2017) March 24, 2026 by jlamprecht https://www.bipm.org/documents/20126/2071143/cc-publication-ID-496.pdf/b1dd7425-edf8-a5cf-12f9-af967287c0a1?version=1.6&t=1731061715667&download=true