%0 Journal Article
%A Dietrich Braess
%T On the Degree of Approximation by Spline Functions with Free Knots.
%J Aequationes mathematicae
%D 1975
%P 80-81
%V 12
%I mathdoc
%U http://geodesic.mathdoc.fr/item/AM2_1975__12_136482/
%F AM2_1975__12_136482