%0 Journal Article
%A V. V. Shurygin
%T On the theory of higher-order differential groups
%J Izvestiâ vysših učebnyh zavedenij. Matematika
%D 1984
%P 77-81
%N 11
%I mathdoc
%U http://geodesic.mathdoc.fr/item/IVM_1984_11_a14/
%G ru
%F IVM_1984_11_a14