%0 Journal Article
%A A. M. Aghdam
%A A. Najafizadeh
%T Square subgroups of rank two abelian groups
%J Colloquium Mathematicum
%D 2009
%P 19-28
%V 117
%N 1
%I mathdoc
%U http://geodesic.mathdoc.fr/articles/10.4064/cm117-1-2/
%R 10.4064/cm117-1-2
%G en
%F 10_4064_cm117_1_2