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@article{MOMA_1978__85_177850, author = {Wolfgang Herfort}, title = {On the {Commutator} {Subgroup} of a {Nonconnected} {Central} {Group.}}, journal = {Monatshefte f\"ur Mathematik}, pages = {49--52}, publisher = {mathdoc}, volume = {85}, year = {1978}, zbl = {0374.22001}, url = {http://geodesic.mathdoc.fr/item/MOMA_1978__85_177850/} }
Wolfgang Herfort. On the Commutator Subgroup of a Nonconnected Central Group.. Monatshefte für Mathematik, Tome 85 (1978), pp. 49-52. http://geodesic.mathdoc.fr/item/MOMA_1978__85_177850/