TY  - RPRT
TI  - Analysis of a Four-Station Doppler Tracking Method Using a Simple CW Beacon
AU  - Fricke, Clifford L.
AU  - Watkins, Carl W. L.
PY  - 1961
UR  - https://ntrs.nasa.gov/citations/20010103393
ID  - 20010103393
ER  -