TY - GEN AU - Lichtfuss, Karen Hansen C2 - , National Institute of Standards and Technology, Gaithersburg, MD DA - 2016-12-01 05:12:00 DO - https://doi.org/10.6028/NIST.IR.8104-12 LA - en PB - , National Institute of Standards and Technology, Gaithersburg, MD PY - 2016 TI - NIST time and frequency bulletin-December 2016: ER -