1. COSPAR International reference atmosphere;CIRA,1972
2. The contraction of satellite orbits under the influence of air drag. Part II. With oblate atmosphere;Cook,1961
3. The contraction of satellite orbits under the influence of air drag. Part III. High eccentricity orbits;King-Hele,1962
4. Kalil, F. Effect of an oblate rotating atmosphere on the eccentricity, semi-major axes and period of a close Earth satellite. The Martin Company, Baltimore 3, Maryland.
5. General perturbation theory;Kampos;NASA CR - 1008,1968