1. Collision frequency of artificial satellite: The creation of a debris belt;Kessler;Journal of Geophy. Res.,1978
2. Sources of orbital debris and the projected environment for future spacecraft;Kessler;Journal of Spacecraft and Rocket,1981
3. Derivation of the collision probability between orbiting objects: The lifetimes of Jupiter's outer moons;Kessler,1981
4. Mass distribution of orbiting man-made space debris;Bess;NASA Technical Note TND-8108,1975
5. The number of objects in space: Modifying the perimeter acquisition radar (PAR) for unknown track experiment for probability of detection (U);Lennertz,1982