%0 Journal Article
%A D. L. Berman
%T Extremal problems in the theory of polynomial operations
%J Doklady Akademii Nauk
%D 1966
%P 13-16
%V 170
%N 1
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DAN_1966_170_1_a1/
%G ru
%F DAN_1966_170_1_a1