@article{01887447,
title = {The surjectivity problem for one-generator, one-relator extensions of torsion-free groups.},
journal = {Geometry \& Topology},
volume = {5},
year = {2001},
pages = {127-142},
doi = {10.2140/gt.2001.5.127},
zbl = {1014.20015},
language = {en},
url = {http://dml.mathdoc.fr/item/01887447}
}
Cohen, Marshall M.; Rourke, Colin. The surjectivity problem for one-generator, one-relator extensions of torsion-free groups.. Geometry & Topology, Tome 5 (2001) pp. 127-142. doi : 10.2140/gt.2001.5.127. http://gdmltest.u-ga.fr/item/01887447/