@article{01508303,
title = {The volume spectrum of hyperbolic 4-manifolds.},
journal = {Experimental Mathematics},
volume = {9},
year = {2000},
pages = {101-125},
doi = {10.1080/10586458.2000.10504640},
zbl = {0963.57012},
language = {en},
url = {http://dml.mathdoc.fr/item/01508303}
}
Ratcliffe, John G.; Tschantz, Steven T. The volume spectrum of hyperbolic 4-manifolds.. Experimental Mathematics, Tome 9 (2000) pp. 101-125. doi : 10.1080/10586458.2000.10504640. http://gdmltest.u-ga.fr/item/01508303/