TY  - RPRT
TI  - EX-5: Time Dependent Gravity Field Mapping
AU  - Watkins, M.
AU  - Tapley, B.
AU  - Folkner, W.
AU  - Chao, B.
PY  - 2000
UR  - https://ntrs.nasa.gov/citations/20060033106
ID  - 20060033106
ER  -