@article{GDZPPN001261231, title = {Endomorphic actions of \ss N on the torus group.}, journal = {Semigroup forum}, volume = {43}, year = {1991}, pages = {202-217}, zbl = {0739.22005}, url = {http://dml.mathdoc.fr/item/GDZPPN001261231} }
Ruppert, W.A.F. Endomorphic actions of ßN on the torus group.. Semigroup forum, Tome 43 (1991) pp. 202-217. http://gdmltest.u-ga.fr/item/GDZPPN001261231/