@article{10_4153_CJM_1979_010_5,
     author = {J{\o}rgensen, Troels},
     title = {Comments {On} a {Discreteness} {Condition} for {Subgroups} of {SL(2,} {C)}},
     journal = {Canadian journal of mathematics},
     pages = {87--92},
     year = {1979},
     volume = {31},
     number = {1},
     doi = {10.4153/CJM-1979-010-5},
     url = {http://geodesic.mathdoc.fr/articles/10.4153/CJM-1979-010-5/}
}