%0 Journal Article
%A Trien Bang Dang
%T Extremal Maps of a Hilbert Space Equipped with a Natural Cone.
%J Mathematische Zeitschrift
%D 1987
%P 95-98
%V 194
%I mathdoc
%U http://geodesic.mathdoc.fr/item/MZ_1987__194_173818/
%F MZ_1987__194_173818