%0 Journal Article
%A W. E. Mientka
%A R. L. Vogt
%T Computational results relating to problems concerning $\sigma (n)$
%J Matematički vesnik
%D 1970
%P 35 
%V 22
%N 1
%I mathdoc
%U http://geodesic.mathdoc.fr/item/MV_1970_22_1_a6/
%F MV_1970_22_1_a6