%0 Journal Article
%A N. Kh. Ibragimov
%A E. V. Mamontov
%T On the Сauchy problem for the equation $u_{tt}-u_{xx}-\sum_{i,j=1}^{n-1}a_{ij}(x-t)u_{y_iy_j}=0$
%J Sbornik. Mathematics
%D 1977
%P 347-363
%V 31
%N 3
%I mathdoc
%U http://geodesic.mathdoc.fr/item/SM_1977_31_3_a3/
%G en
%F SM_1977_31_3_a3