TY - GEN AU - Lichtfuss, Karen L. Hansen C2 - , National Institute of Standards and Technology, Gaithersburg, MD DA - 2016-07-01 04:07:00 DO - https://doi.org/10.6028/NIST.IR.8104-07 LA - en PB - , National Institute of Standards and Technology, Gaithersburg, MD PY - 2016 TI - NIST Time and Frequency Bulletin: July 2016: ER -