TY - JOUR AU - F.-L. Hong AU - J. Ishikawa AU - K. Sugiyama AU - A. Onae AU - H. Matsumoto AU - Jun Ye AU - John Hall BT - IEEE Transactions on Instrumentation and Measurement DA - 2003-04 DO - 10.1109/TIM.2003.811676 PY - 2003 SP - 240 EP - 244 T2 - IEEE Transactions on Instrumentation and Measurement TI - Comparison of independent optical frequency measurements using a portable iodine-stabilized Nd:YAG laser VL - 52 SN - 0018-9456 ER -