The March 9, 1997 total solar eclipse:

Afraimovich, E. L., K. S.Palamartchouk, N. P.Perevalova, V. V.Chernukhov, A. V.Lukhnev, and V. T. Zalutsky, Ionospheric effects of the solar eclipse of March 9, 1997, as deduced from the GPS data, Geophys. Res. Letters, 1998, V.25, N4, P. 465-468.

The August 11, 1999 total solar eclipse:

1. Afraimovich, E. L., E. A. Kosogorov, and O. S. Lesyuta, Ionospheric Response to the Total Solar Eclipse of August 11, 1999, Inferred from the European GPS Data, Geomagnetism and Aeronomy, 2001, Ò.41, N4, P. 474. (Abstract only);
2. Afraimovich, E. L., E. A. Kosogorov, and O. S. Lesyuta, Ionospheric effects of the August 11, 1999 total solar eclipse as deduced from european GPS network data, Advances of Space Research, 2001, V.27, N6-7, 1351-1354;
3. Afraimovich, E. L., E. A. Kosogorov, and O. S. Lesyuta, Effects of the August 11, 1999 total solar eclipse as deduced from total electron content measurements at the GPS network, LANL e-print archive, http://arxiv.org/abs/physics/0007024.

The June 21, 2001 total solar eclipse:

Afraimovich, E. L., O. S. Lesyuta, Ionospheric response to the total solar eclipse of June 21, 2001 as deduced from the data from the African GPS network, LANL e-print archive, http://arxiv.org/abs/physics/0201047.