%0 Journal Article %A Alessandro Andretta %A Riccardo Camerlo %A Greg Hjorth %T Conjugacy equivalence relation on subgroups %J Fundamenta Mathematicae %D 2001 %P 189-212 %V 167 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.4064/fm167-3-1/ %R 10.4064/fm167-3-1 %G en %F 10_4064_fm167_3_1