%0 Journal Article
%A W.A.F. Ruppert
%T Endomorphic actions of ßN on the torus group.
%J Semigroup forum
%D 1991
%P 202-217
%V 43
%N 3
%I mathdoc
%U http://geodesic.mathdoc.fr/item/SF_1991__43_3_135109/
%F SF_1991__43_3_135109