TY  - RPRT
TI  - Gravity field improvement using GPS data from Topex/Poseidon - A covariance analysis
AU  - Bertiger, Willy I.
AU  - Wu, J. T.
AU  - Wu, Sien C.
PY  - 1990
UR  - https://ntrs.nasa.gov/citations/19900065966
ID  - 19900065966
ER  -