@article{MS2_1974__34_166349,
     author = {Troels Jorgensen},
     title = {Some {Remarks} of {Kleinian} {Groups.}},
     journal = {Mathematica Scandinavica},
     pages = {101--108},
     publisher = {mathdoc},
     volume = {34},
     year = {1974},
     zbl = {0286.30018},
     url = {http://geodesic.mathdoc.fr/item/MS2_1974__34_166349/}
}