1. Akasofu, S-I, “The Dynamic Aurora”. Scientific American 260 5 54–63 (1989).
2. Astronomy 19 6 30 (1991) [photographs of CRRES experimental gas releases].
3. Aurora Alert Hotline: David Huestis, 25 Manley Drive, Pascoag, RI 02859, USA. Tel. (401) 568–9370.
4. Aurora Web Site:
http://www.geo.mtu.edu
/weather/aurora
5. Bone, N, The Aurora: Sun-Earth Interactions, 2nd edition. Wiley-Praxis (1996).