TY - CONF AU - Parker, Thomas C2 - 2001 IEEE Intl. Frequency Control Symposium , Seattle, WA DA - 2001-01-01 LA - en PB - 2001 IEEE Intl. Frequency Control Symposium , Seattle, WA PY - 2001 TI - Comparing and Evaluating the Performance of Primary Frequency Standards: Impact of Dead Time ER -