%0 Journal Article
%A V. A. Shapiro
%A A. A. Akhmetzyanova
%A N. V. Fedorova
%T Secular variation of the geomagnetic field in the course of 21 and 22 solar activity maxima
%J Doklady Akademii Nauk
%D 1995
%P 243-246
%V 344
%N 2
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DAN_1995_344_2_a15/
%G ru
%F DAN_1995_344_2_a15