TY - RPRT TI - Precise Frequency Measurements Using a Superconduction Cavity Stabilized Oscillator AU - Asplund, N. AU - Anderson, V. AU - Jiang, W. AU - Yeh, N. C. AU - Strayer, D. PY - 1999 UR - https://ntrs.nasa.gov/citations/20210005643 ID - 20210005643 ER -