@article{01522372, title = {On the geometric boundaries of hyperbolic 4-manifolds.}, journal = {Geometry \& Topology}, volume = {4}, year = {2000}, pages = {171-178}, doi = {10.2140/gt.2000.4.171}, zbl = {0961.57011}, language = {en}, url = {http://dml.mathdoc.fr/item/01522372} }
Long, D.D.; Reid, A.W. On the geometric boundaries of hyperbolic 4-manifolds.. Geometry & Topology, Tome 4 (2000) pp. 171-178. doi : 10.2140/gt.2000.4.171. http://gdmltest.u-ga.fr/item/01522372/