%0 Journal Article
%A Z. Ditzian
%T Note on Hille's question.
%J Aequationes mathematicae
%D 1977
%P 143-144
%V 15
%I mathdoc
%U http://geodesic.mathdoc.fr/item/AM2_1977__15_136645/
%F AM2_1977__15_136645