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References to 'The J2 Gravity Perturbation: Nodal Regression and Apsidal Precession for GPS Orbits'
1. Deriving IS-GPS-200 Table 20-IV: Harmonic Corrections, Orbital-Plane Coordinates, and ECEF Position by bloftin
2. GPS Broadcasts Extra Ephemeris Parameters: Delta-n, Node and Inclination Rates, and Harmonic Corrections by bloftin