%0 Journal Article
%A Haimo, Franklin
%T Free subgroups in the endomorphism ring of an Abelian free group
%J Portugaliae mathematica
%D 1981
%P 393-398
%V 40
%N 4
%I mathdoc
%U http://geodesic.mathdoc.fr/item/PORMA_1981__40_4_115466/
%G en
%F PORMA_1981__40_4_115466