1. Sagalyn, R. C., and Smiddy, M., “Results of Charged Particle Measurements in the Energy Range 0 to 1,000 Electron Volts”, paper presented at the Spring Meeting of the American Geophysical Union in Washington, 1965.
2. Gringauz, K. I., Bezrukikh, V. V., Ozerov, V. D., and Rybychinskii, R. E., Dokl. Akad. Nauk. S.S.S.R., 131 (6), 1301 (1960).
3. Serbu, G. P., NASA publication X-615-64-109.
4. Ness, N. F., J. Geophys. Res., 70, 2989 (1965).
5. Thomas, L. (unpublished results).