@article{10_4171_ggd_4,
     author = {Michael Kapovich and Bruce Kleiner},
     title = {The weak hyperbolization conjecture for 3-dimensional {CAT(0)-groups}},
     journal = {Groups, geometry, and dynamics},
     pages = {61--79},
     year = {2007},
     volume = {1},
     number = {1},
     doi = {10.4171/ggd/4},
     url = {http://geodesic.mathdoc.fr/articles/10.4171/ggd/4/}
}