@article{GT_1998_2_1_a6,
     author = {Belegradek, Igor},
     title = {Intersections in hyperbolic manifolds},
     journal = {Geometry & topology},
     pages = {117--144},
     publisher = {mathdoc},
     volume = {2},
     number = {1},
     year = {1998},
     doi = {10.2140/gt.1998.2.117},
     url = {http://geodesic.mathdoc.fr/articles/10.2140/gt.1998.2.117/}
}