%0 Journal Article
%A I. V. Gel'man
%T On some non-linear operator
%J Doklady Akademii Nauk
%D 1958
%P 454-456
%V 120
%N 3
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DAN_1958_120_3_a2/
%G ru
%F DAN_1958_120_3_a2