%0 Journal Article
%A V. S. Ryzhii
%T The uniqueness of a solution of the Cauchy problem for second order equations
%J Differencialʹnye uravneniâ
%D 1972
%P 349-361
%V 8
%N 2
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DE_1972_8_2_a15/
%G ru
%F DE_1972_8_2_a15