1. L.A. Aroian, D.E. Robison, A data editing routine. Space Technology Labs. Internal Report No. PA 2952-01, July (1960)
2. Efficient precision orbit computations;Baker;Aeronutronics PAM,1959
3. Astrodynamics.;Baker,1960
4. Satellite orbit theory using a new coordinate system;Brenner;Proc. Roy. Soc. (London),1960
5. On the accumulation of errors in numerical integration;Brouwer;Astron. J.,1937