1. Albert R. D., 1967, Nearly monoenergetic electron fluxes detected during a visible aurora, Phys. Rev. Letters, 18: 369.
2. Arnoldy R. L., 1970, Rapid fluctuations of energetic auroral particles, J. Geophys. Res., 75: 228.
3. Arnoldy R. L., 1981, Review of auroral particle precipitation, in: “Physics of Auroral Arc Formation”, Geophysical Monograph 25, American Geophysical Union, Washington, p56.
4. Arnoldy R. L., Lewis P. B., and Isaacson P. 0., 1974, Field aligned auroral electron fluxes, J. Geophys. Res., 79: 4208.
5. Barbosa D. D., 1977, Stability of shell distributions, Planet. Space Sci., 25: 981.