@article{GDZPPN002299267,
title = {The Centre of Groups with One Defining Relator.},
journal = {Mathematische Annalen},
volume = {179},
year = {1968},
pages = {315-319},
zbl = {0157.34901},
url = {http://dml.mathdoc.fr/item/GDZPPN002299267}
}
BAUMSLAG, G.; TAYLOR, T. The Centre of Groups with One Defining Relator.. Mathematische Annalen, Tome 179 (1968) pp. 315-319. http://gdmltest.u-ga.fr/item/GDZPPN002299267/