TY  - RPRT
TI  - Tracking Gravity Probe B gyroscope polhode motion
AU  - Keiser, George M.
AU  - Parkinson, Bradford W.
AU  - Cohen, Clark E.
PY  - 1990
UR  - https://ntrs.nasa.gov/citations/19900060618
ID  - 19900060618
ER  -