%0 Journal Article
%A Eckford Cohen
%T Arithmetical Notes, XIII. A Sequal to Note IV.
%J Elemente der Mathematik
%D 1963
%P 8-11
%V 18
%I mathdoc
%U http://geodesic.mathdoc.fr/item/ELMA_1963__18_140760/
%F ELMA_1963__18_140760