@article{GDZPPN002480891, title = {On the Commutator Subgroup of a Nonconnected Central Group.}, journal = {Monatshefte f\"ur Mathematik}, volume = {85}, year = {1978}, pages = {49-52}, zbl = {0374.22001}, url = {http://dml.mathdoc.fr/item/GDZPPN002480891} }
Herfort, Wolfgang. On the Commutator Subgroup of a Nonconnected Central Group.. Monatshefte für Mathematik, Tome 85 (1978) pp. 49-52. http://gdmltest.u-ga.fr/item/GDZPPN002480891/