@article{GDZPPN00242813X, title = {Endomorphism of Polycyclic Groups.}, journal = {Mathematische Zeitschrift}, volume = {183}, year = {1983}, pages = {97-100}, zbl = {0502.20018}, url = {http://dml.mathdoc.fr/item/GDZPPN00242813X} }
Wehrfritz, Bertram A.F. Endomorphism of Polycyclic Groups.. Mathematische Zeitschrift, Tome 183 (1983) pp. 97-100. http://gdmltest.u-ga.fr/item/GDZPPN00242813X/