%0 Journal Article
%A I. M. Leibo
%T On closed mappings of infinite-dimensional spaces
%J Doklady Akademii Nauk
%D 1971
%P 533-535
%V 199
%N 3
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DAN_1971_199_3_a6/
%G ru
%F DAN_1971_199_3_a6