%0 Journal Article
%A R. Strebel
%T A remark on subgroups of infinite index in Poincaré duality groups.
%J Commentarii mathematici Helvetici
%D 1977
%P 317-324
%V 52
%I mathdoc
%U http://geodesic.mathdoc.fr/item/CMH_1977__52_139696/
%F CMH_1977__52_139696