%0 Journal Article
%A S. Ts. Akopyan
%A V. N. Zharkov
%A V. M. Lyubimov
%T Perturbation theory for spheroidal oscillations of the Earth. Second approximation
%J Doklady Akademii Nauk
%D 1974
%P 1078-1081
%V 218
%N 5
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DAN_1974_218_5_a20/
%G ru
%F DAN_1974_218_5_a20