%0 Journal Article
%A I. SINGER
%T On best Approximation of Continuous Functions.
%J Mathematische Annalen
%D 1960
%P 165-168
%V 140
%I mathdoc
%U http://geodesic.mathdoc.fr/item/MAN_1960__140_160770/
%F MAN_1960__140_160770