1. Auroral substorms: Paradigm shifts in research;Akasofu;Eos Trans. AGU,2010
2. American National Standards Institute/American Institute of Aeronautics and Astronautics 2010 Guide to reference and standard atmosphere models G-003C-2010 Reston, Va.
3. Beitraege International Geophysikalisch Jahr;Bartels;Abh. Akad. Wiss. Gottingen, Math.-Phys. Kl.,1958
4. The thermosphere;Bates;Proc. R. Soc. London, Ser. A,1956
5. Bowman , B. R. K. Moe 2005 Drag coefficient variability at 175-500 km from the orbit decay analysis of spheres Pap. 05-257 Am. Astronaut. Soc. San Diego, Calif.