1. Adams, J. H. Jr., Shapiro, M. M., Silberberg, R. and Tsao, C. H. 1979, 17th ICRC, Paris 2, 256.
2. Adams, J. H., Jr., Bellingham, J. and Graney, P.E., 1983, NRL Memo Report.
3. Beer, J., et al. 1983, 18th ICRC, Bangalore, 9, 312.
4. Blake, J. B. and Schramm, D.N., 1974, Ap. Space Sci. 30, 275.
5. Blankford, R. D. and Ostriker, J. P., 1980, Ap. J., 237, 793.