1. Berghmans, D., van der Linden, R., Vanlommel, P., Clette, F., and Robbrecht, E.: 2006, in W. Schreder (ed.), Historical Events and People in Aeronomy, Geo-magnetism and Solar-Terresterial Physics, Beitrage zur Geschichte der Geophysik, Vol VII, Heft/No. 1, IAGA2005-A-01054.
2. Blanter, E.M., Shnirman, M.G., and Le Mouël, J.-L.: 2005, J. Atmos. Solar Terres. Phy. 67, 521.
3. Bogdan, T.J., Gilman, P.A., Lerche, I., and Howard, R.: 1988, Astrophys. J. 327, 451.
4. Crouzeix, C., Le Mouël, J.L., F., P., Shnirman, M.G., and Blanter, E.: 2005, Phys. Rev. E, submitted for publication.
5. Fligge, M. and Solanki, S.K.: 1997, Solar Phys. 173, 427.