1. Reynolds, RobertC.; Fisher, Norman H.; Rire, Erice.; “Man-made Debris in Low Earth Orbit–AThreatto Future Space Operations”, Journal of Spacec raft and Rockets, Vol. 20, No.-3, May-June, 1983, p. 285.
2. Covault, C.; “Soviet Nuclear Spacecraft Poses Reentry Danger”, Aviation Week and Space Technology, J a n. 10, 1983, p. 18.
3. Ibid.
4. Rote, D.M., “Environmental Effects of Space Systems”, Journal – of Space craft and Rockets, Feb. 1982, Vol. 19, No. 1, p. 20.
5. Dewey, J.; Reconstruction in Philosophy, Henry Holt, N.Y., 1920, p. 173f.