ACOUSTIC BEHAVIOUR OF THE AMORPHOUS SUPERCONDUCTOR Cu60Zr40 AT VERY LOW TEMPERATURES W. Arnold, A. Billmann, P. Doussineau et A. Levelut J. Phys. Colloques, 43 C9 (1982) C9-537-C9-539 DOI: 10.1051/jphyscol:19829107