%0 Journal Article %A B. R. Vainberg %T Behavior of the solution of the Cauchy problem for a hyperbolic equation $t\to\infty$ %J Sbornik. Mathematics %D 1969 %P 533-567 %V 7 %N 4 %U http://geodesic.mathdoc.fr/item/SM_1969_7_4_a4/ %G en %F SM_1969_7_4_a4