%0 Journal Article
%A C. Gordon
%A H. Gluck
%A DeTurck
%A D.
%T You can not hear the mass of a homology class.
%J Commentarii mathematici Helvetici
%D 1989
%P 589-617
%V 64
%N 1
%I mathdoc
%U http://geodesic.mathdoc.fr/item/CMH_1989__64_1_140173/
%F CMH_1989__64_1_140173