%0 Journal Article
%A M. I. Kokotov
%T Almost-periodicity of solutions of the equation $\partial^2u/\partial t^2=\Delta u-q(x)u+f(x,t)$
%J Doklady Akademii Nauk
%D 1971
%P 1014-1017
%V 197
%N 5
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DAN_1971_197_5_a6/
%G ru
%F DAN_1971_197_5_a6