%0 Journal Article
%A Shapiro, H.S.
%T On a class of extremal problems for polynomials in the unit circle
%J Portugaliae mathematica
%D 1961
%P 67-93
%V 20
%N 2
%I mathdoc
%U http://geodesic.mathdoc.fr/item/PORMA_1961__20_2_114854/
%G en
%F PORMA_1961__20_2_114854