%0 Journal Article
%A Ralph Strebel
%T Homological Methods Applied to the Derived Series of Groups
%J Commentarii mathematici Helvetici
%D 1974
%P 302-332
%V 49
%I mathdoc
%U http://geodesic.mathdoc.fr/item/CMH_1974__49_139587/
%F CMH_1974__49_139587