TY - RPRT TI - Precise Frequency Measurements Using a Superconducting Cavity Stabilized Oscillator AU - Strayer, D. M. AU - Yeh, N.-C. AU - Jiang, W. AU - Anderson, V. L. AU - Asplund, N. PY - 1999 UR - https://ntrs.nasa.gov/citations/20000073717 ID - 20000073717 ER -