1. Afraimovich, E. L., GPS global detection of the ionospheric response to solar flares, Radio Sci., 35(6), 1417–1424, 2000.
2. Afraimovich, E. L., E. A. Kosogorov, and L. A. Leonovich, The use of the international GPS network as the global detector (GLOBDET) simultaneously observing sudden ionospheric disturbances, Earth Planets Space, 52(11), 1077–1082, 2000.
3. Afraimovich, E. L., O. S. Lesyuta, I. I. Ushakov, and S. V. Voeykov, Geomagnetic storms and the occurrence of phase slips in the reception of GPS signals, Ann. Geophys., 45(1), 55–71, 2002.
4. Afraimovich, E. L., G. A. Zherebtsov, and G. Ya. Smolkov, Total failure of GPS during a solar flare on December 6, 2006, Doklady Earth Sci., 417(8), 1231–1235, 2007.
5. Asai, A., H. Hara, T. Watanabe, Sh. Imada, T. Sakao, N. Narukage, J. L. Culhane, and G. A. Doschek, Strongly blueshifted phenomena observed with Hinode/EIS in the 2006 December 13 solar flare, Astrophys. J., 684, 2008 (in press). http://solar.physics.montana.edu/cgibin/eprint/index.pl?entry=7249, 2008-06-05 23:36 (submitted).