TY  - JOUR
AU  - Michael Lombardi
AU  - Thomas Heavner
AU  - Steven Jefferts
C2  - Measure: The Journal of Measurement Science
DA  - 2007-12-01
LA  - en
M1  - 2
PB  - Measure: The Journal of Measurement Science
PY  - 2007
TI  - NIST Primary Frequency Standards and the Realization of the SI Second
UR  - https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=50602
ER  -