1. The Astronomical Almanac for the Year 1997, U.S. Government Printing Office, Washington, 1996.
2. SEIDELMANN, P. K. (editor) Explanatory Supplement to the Astronomical Almanac, University Science Books, Mill Valley, California, 1992.
3. DEPRIT, A. and POPLARCHEK, W. “Compression of Ephemerides,” Celestial Mechanics, Vol. 11, 1975, pp. 53–58.
4. PICKARD, H.M., DEPRIT, A., and POPLARCHEK, W. “Compression of Ephemerides by Discrete Chebyshev Approximations,” Paper No. 78-1403, AIAA/AAS Astrodynamics Conference, Palo Alto, California, August 1978.
5. COFFEY, S. L., ECKSTEIN, B., and KELM, B. “Compression of Satellite Orbits,” Paper No. 96-125, AAS/AIAA Spaceflight Mechanics Meeting, Austin, Texas, February, 1996.