%0 Journal Article
%A È. M. Kan
%T The conservation laws for quasilinear systems of four partial differential equations of the first order
%J Izvestiâ vysših učebnyh zavedenij. Matematika
%D 1968
%P 78-80
%N 1
%I mathdoc
%U http://geodesic.mathdoc.fr/item/IVM_1968_1_a9/
%G ru
%F IVM_1968_1_a9