TY  - GEN
AU  - Stephenson, Kathryn R
C2  - , National Institute of Standards and Technology, Gaithersburg, MD
DA  - 2017-04-01 04:04:00
DO  - https://doi.org/10.6028/NIST.IR.8167-04
LA  - en
PB  - , National Institute of Standards and Technology, Gaithersburg, MD
PY  - 2017
TI  - NIST time and frequency bulletin: April:
ER  -