Proportional Helium Thrusters for Gravity Probe B (AAS 08-038)
Determination of Spherical Test Mass Kinematics with Modular Gravitational Reference Sensor
Gyroscope Free Strapdown Inertial Measurement Unit by Six Linear Accelerometers
On-orbit performance of Gravity Probe B drag-free translation control and orbit determination
Development of the Gravity Probe B flight mission
Gravity Probe B payload verification and test program