%0 Journal Article
%A A. M. Panov
%T On the theory of the index of systems of difference equations on the plane
%J Izvestiâ vysših učebnyh zavedenij. Matematika
%D 1969
%P 71-75
%N 12
%I mathdoc
%U http://geodesic.mathdoc.fr/item/IVM_1969_12_a9/
%G ru
%F IVM_1969_12_a9