1. Dow, Norris F., “Structural Implications of the Ionizing Radiation in Space,” Proceedings of the Manned Space Stations Symposium, Los Angeles, California, April 20 − 22, 1960.
2. Singer, S. F., “Some Consequences of a Theory of the Radiation Belt, “9th Annual Congress of the IAF, Amsterdam, August 26, 1958.
3. McDonald, F. B. and Webber, W. R., “Variation of Cosmic Ray Intensity During a Solar Cycle,” Kallmann-Bijl, Space Research, p. 968, COSPAR Symposium, North-Holland, Amsterdam, New York, 1960.
4. “Superconductivity in Nb3Sn at High Current Density in a Magnetic Field of 88 K Gauss”;Kunzler;Physical Review Letters,1961
5. “Some Radiation Problems of Space Conquest”;Langham;Astronautical Sciences Review,1960