%0 Journal Article %A Yves Cornulier %T Subgroups approximatively of finite index and wreath products %J Groups, geometry, and dynamics %D 2014 %P 775-788 %V 8 %N 3 %U http://geodesic.mathdoc.fr/articles/10.4171/ggd/247/ %R 10.4171/ggd/247 %F 10_4171_ggd_247