%0 Journal Article
%A V. S. Mokeichev
%A A. V. Mokeichev
%T A~new approach to the theory of linear problems for systems of partial differential equations.~III
%J Izvestiâ vysših učebnyh zavedenij. Matematika
%D 1999
%P 50-59
%N 11
%I mathdoc
%U http://geodesic.mathdoc.fr/item/IVM_1999_11_a5/
%G ru
%F IVM_1999_11_a5