%0 Journal Article
%A L.C.A. van LEEÜWEN
%T On endomorphisms and quasi-endomorphisms of torsionfree groups
%J Beiträge zur Algebra und Geometrie
%D 1975
%P 15-22
%V 4
%I mathdoc
%U http://geodesic.mathdoc.fr/item/BAG_1975__4_138113/
%F BAG_1975__4_138113