%0 Journal Article
%A M. Felten
%T A modulus of smoothness based on an algebraic addition.
%J Aequationes mathematicae
%D 1997
%P 56-73
%V 54
%N 3
%I mathdoc
%U http://geodesic.mathdoc.fr/item/AM2_1997__54_3_137694/
%F AM2_1997__54_3_137694