TY - JOUR
AU - John Hall
AU - Jun Ye
BT - Optics and Photonics News
DA - 2001
DO - 10.1364/OPN.12.2.000044
PY - 2001
EP - 44
T2 - Optics and Photonics News
TI - A New Era of Frequency Standards and Optical Frequency Measurement
VL - 12
SN - 1047-6938
ER -