%0 Journal Article
%A V. M. Petkov
%T The Cauchy problem for symmetrizable systems and for non-strictly hyperbolic equations
%J Trudy Matematicheskogo Instituta imeni V.A. Steklova
%D 1971
%V 26
%N 6
%U http://geodesic.mathdoc.fr/item/RM_1971_26_6_a12/
%G ru
%F RM_1971_26_6_a12