@article{10_4171_ggd_253,
     author = {Alexander Yu. Olshanskii and Denis Osin},
     title = {$C$*-simple groups without free subgroups},
     journal = {Groups, geometry, and dynamics},
     pages = {933--983},
     year = {2014},
     volume = {8},
     number = {3},
     doi = {10.4171/ggd/253},
     url = {http://geodesic.mathdoc.fr/articles/10.4171/ggd/253/}
}