%0 Journal Article %A O'Malley, Thomas J. %T S-Subgroups of the Real Hyperbolic Groups %J Canadian journal of mathematics %D 1980 %P 246-256 %V 32 %N 1 %U http://geodesic.mathdoc.fr/articles/10.4153/CJM-1980-019-6/ %R 10.4153/CJM-1980-019-6 %F 10_4153_CJM_1980_019_6