%0 Journal Article
%A A. B. Levin
%T Characteristic polynomials of filtered difference modules and of~extensions of~difference fields
%J Trudy Matematicheskogo Instituta imeni V.A. Steklova
%D 1978
%P 165-166
%V 33
%N 3
%I mathdoc
%U http://geodesic.mathdoc.fr/item/RM_1978_33_3_a16/
%G en
%F RM_1978_33_3_a16