TY  - JOUR
AU  - Michael Lombardi
C2  - IEEE Instrumentation and Measurement Magazine
DA  - 2012-02-01
LA  - en
M1  - 15
PB  - IEEE Instrumentation and Measurement Magazine
PY  - 2012
TI  - The Evolution of Time Measurement: Part 3 - Atomic Clocks; The Evolution of Time Measurement: Part 4 - Atomic Second
ER  -