%0 Journal Article
%A Robert Bieri
%A Benno Eckmann
%T Amalgamated Free Products of Groups and Homological Duality
%J Commentarii mathematici Helvetici
%D 1974
%P 460-478
%V 49
%I mathdoc
%U http://geodesic.mathdoc.fr/item/CMH_1974__49_139594/
%F CMH_1974__49_139594