%0 Journal Article
%A N. G. Marchuk
%T Symmetric hyperbolic systems of second-order equations
%J Doklady Akademii Nauk
%D 1988
%P 1063-1068
%V 298
%N 5
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DAN_1988_298_5_a7/
%G ru
%F DAN_1988_298_5_a7