@article{01605726,
title = {Homology cylinders: an enlargement of the mapping class group.},
journal = {Geometry \& Topology},
volume = {5},
year = {2001},
pages = {243-270},
doi = {10.2140/agt.2001.1.243},
zbl = {0978.57015},
language = {en},
url = {http://dml.mathdoc.fr/item/01605726}
}
Levine, Jerome. Homology cylinders: an enlargement of the mapping class group.. Geometry & Topology, Tome 5 (2001) pp. 243-270. doi : 10.2140/agt.2001.1.243. http://gdmltest.u-ga.fr/item/01605726/