%0 Journal Article
%A Carl Pomerance
%T On the composition of the arithmetic functions σ and φ
%J Colloquium Mathematicum
%D 1989
%P 11-15
%V 58
%N 1
%I mathdoc
%U http://geodesic.mathdoc.fr/articles/10.4064/cm-58-1-11-15/
%R 10.4064/cm-58-1-11-15
%G en
%F 10_4064_cm_58_1_11_15