%0 Journal Article
%A O. A. Godin
%T Estimates for phase and group velocities of acoustic normal waves
%J Doklady Akademii Nauk
%D 1990
%P 1084-1089
%V 310
%N 5
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DAN_1990_310_5_a13/
%G ru
%F DAN_1990_310_5_a13