On the Long-Period Motion in the Semi-Major Axis of the Orbit of the Telstar 2 Satellite
The Motion of a Satellite of the Moon
The Motion of a Satellite of the Moon
The Goddard General Orbit Determination System
Dynamic Mass Modeling and Geophysical Analysis of Lunar Maria Based on APOLLO Tracking Data
Lunar Mascon Evidence from APOLLO Orbits
Derivation and Tests of the Goddard Combined Geopotential Field (Gsfc 1.70- C)
Gravity Harmonics from a Resonant Two-Hour Satellite
The Potential Function and Field of Force of a Spheroid
Analysis of Lunar and Solar Effects on the Motion of Close Earth Satellites
Analytical Studies of Luni-Solar Effects on the Motion of Artificial Satellites