@article{GFA_1995__5_4_58202,
     author = {M. Kapovich and B. Leeb},
     title = {On {Asymptotic} {Cones} and {Quasi-isometry} {Classes} of {Fundamental} {Groups} of 3-manifolds.},
     journal = {Geometric and functional analysis},
     pages = {582--603},
     publisher = {mathdoc},
     volume = {5},
     number = {4},
     year = {1995},
     zbl = {0829.57006},
     url = {http://geodesic.mathdoc.fr/item/GFA_1995__5_4_58202/}
}