by Feldstein, Y.I., Dremukhina, L.A., Levitin, A.E., Mall, U., Alexeev, I.I., Kalegaev, V.V.
Published in Journal of atmospheric and solar-terrestrial physics (01.03.2003)

by Feldstein, Y.I, Gromova, L.I, Grafe, A, Meng, C.-I, Kalegaev, V.V, Alexeev, I.I, Sumaruk, Yu.P
Published in Radiation measurements (01.10.1999)

by Feldstein, Y. I.
Published in Tellus (01.05.1964)

by Feldstein, Y. I.
Published in Tellus (01.05.1964)

by Alexeev, I.I., Feldstein, Y.I., Greenwald, R.A.
Published in Physics and chemistry of the earth (1997)

by Galperin, Yu. I., Feldstein, Ya. I.
Published in Journal of geomagnetism and geoelectricity (01.01.1996)