TY  - RPRT
TI  - Gravity field information from Gravity Probe-B
AU  - Smith, D. E.
AU  - Lerch, F. J.
AU  - Colombo, O. L.
AU  - Everitt, C. W. F.
PY  - 1989
UR  - https://ntrs.nasa.gov/citations/19900011238
ID  - 19900011238
ER  -