TY  - RPRT
TI  - Evaluation of advanced geopotential models for operational orbit determination
AU  - Radomski, M. S.
AU  - Davis, B. E.
AU  - Samii, M. V.
AU  - Engel, C. J.
AU  - Doll, C. E.
PY  - 1988
UR  - https://ntrs.nasa.gov/citations/19890006591
ID  - 19890006591
ER  -