%0 Journal Article
%A V. M. Petkov
%T On the Cauchy problem for first-order hyperbolic systems with multiple characteristics
%J Doklady Akademii Nauk
%D 1973
%P 795-797
%V 209
%N 4
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DAN_1973_209_4_a10/
%G ru
%F DAN_1973_209_4_a10