@article{CMH_1989__64_1_140173,
     author = {C. Gordon and H. Gluck and DeTurck and D.},
     title = {You can not hear the mass of a homology class.},
     journal = {Commentarii mathematici Helvetici},
     pages = {589--617},
     publisher = {mathdoc},
     volume = {64},
     number = {1},
     year = {1989},
     zbl = {0694.53037},
     url = {http://geodesic.mathdoc.fr/item/CMH_1989__64_1_140173/}
}