%0 Journal Article
%A N. G. Marchuk
%T On a method of reducing the wave equation to a system of first order equations
%J Doklady Akademii Nauk
%D 1984
%P 1309-1311
%V 276
%N 6
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DAN_1984_276_6_a5/
%G ru
%F DAN_1984_276_6_a5