%0 Journal Article
%A D. L. Berman
%T Certain extremal problems of the theory of polynomial operators
%J Doklady Akademii Nauk
%D 1965
%P 999-1002
%V 161
%N 5
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DAN_1965_161_5_a0/
%G ru
%F DAN_1965_161_5_a0