@article{GDZPPN002089289,
title = {Finitely Presented Subgroups of Three-Manifold Groups.},
journal = {Inventiones mathematicae},
volume = {14},
year = {1971},
pages = {335-346},
zbl = {0232.57003},
url = {http://dml.mathdoc.fr/item/GDZPPN002089289}
}
Jaco, W. Finitely Presented Subgroups of Three-Manifold Groups.. Inventiones mathematicae, Tome 14 (1971) pp. 335-346. http://gdmltest.u-ga.fr/item/GDZPPN002089289/