%0 Journal Article
%A Richard Askey
%A I.I. Jr. Hirschman
%T Mean Summability for Ultraspherical Polynomials.
%J Mathematica Scandinavica
%D 1963
%P 167-177
%V 12
%I mathdoc
%U http://geodesic.mathdoc.fr/item/MS2_1963__12_165842/
%F MS2_1963__12_165842