%0 Journal Article
%A Khavinson, Dmitry
%T An Extremal Problem for Harmonic Functions in the Ball
%J Canadian mathematical bulletin
%D 1992
%P 218-220
%V 35
%N 2
%U http://geodesic.mathdoc.fr/articles/10.4153/CMB-1992-031-8/
%R 10.4153/CMB-1992-031-8
%F 10_4153_CMB_1992_031_8