%0 Journal Article
%A V. N. Shuhman
%T The Cauchy problem for not strictly hyperbolic equations
%J Doklady Akademii Nauk
%D 1970
%P 551-553
%V 193
%N 3
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DAN_1970_193_3_a14/
%G ru
%F DAN_1970_193_3_a14