%0 Journal Article
%A Yu. I. Petunin
%T Prenuclear mappings in scales of Banach and Hilbert spaces
%J Doklady Akademii Nauk
%D 1967
%P 40-43
%V 173
%N 1
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DAN_1967_173_1_a9/
%G ru
%F DAN_1967_173_1_a9