%0 Journal Article
%A V. S. Ryaben'kii
%A A. Ya. Belyankov
%T Difference potentials and projections
%J Doklady Akademii Nauk
%D 1980
%P 1080-1084
%V 254
%N 5
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DAN_1980_254_5_a13/
%G ru
%F DAN_1980_254_5_a13