TY  - RPRT
TI  - Simulation gravity modeling to spacecraft-tracking data - Analysis and application
AU  - Phillips, R. J.
AU  - Sjogren, W. L.
AU  - Abbott, E. A.
AU  - Zisk, S. H.
PY  - 1978
UR  - https://ntrs.nasa.gov/citations/19790031864
ID  - 19790031864
ER  -