TY - GEN AU - Karen L. Hansen Lichtfuss C2 - , National Institute of Standards and Technology, Gaithersburg, MD DA - 2016-09-01 04:09:00 DO - https://doi.org/10.6028/NIST.IR.8104-09 LA - en PB - , National Institute of Standards and Technology, Gaithersburg, MD PY - 2016 TI - NIST Time and Frequency Bulletin: September 2016: ER -