%0 Journal Article
%A Dietrich Braess
%T On the Number of Best Approximations in Certain Non-Linear Families of Functions. (Short Communication).
%J Aequationes mathematicae
%D 1974
%P 118-119
%V 11
%I mathdoc
%U http://geodesic.mathdoc.fr/item/AM2_1974__11_136446/
%F AM2_1974__11_136446