TY - JOUR AU - Parker, Thomas AU - Levine, Judah C2 - IEEE Transactions on Ultrasonics Ferroelectrics and Frequency Control DA - 1997-01-01 LA - en M1 - 44 PB - IEEE Transactions on Ultrasonics Ferroelectrics and Frequency Control PY - 1997 TI - Impact of New High Stability Frequency Standards on the Performance of the NIST AT1 Time Scale ER -