1. Billings, D.E.: 1966, A Guide to the Solar Corona, Academic Press, New York.
2. Brueckner, G.E., Howard, R.A., Koomen, M.J., Korendyke, C.M., Michels, D.J., Moses, J.D., et al.: 1995, Solar Phys. 162, 357.
3. Colaninno, R., Vourlidas, A.: 2009, Astrophys. J. 697, 852C.
4. Cook, J.W., Newmark, J.S., Reiser, P.A., Crane, P.C., Yahil, A., Gosnell, T., Puetter, R.: 2002, http://stereo-ssc.nascom.nasa.gov/meetings/workshop1 .
5. Delaboudinière, J.-P., Artzner, G.E., Brunaud, J., Gabriel, A.H., Hochedez, J.F., Millier, et al.: 1995, Solar Phys. 162, 291.