MAGNETIC FIELD DEPENDENCE OF THE ULTRASONIC ATTENUATION AND RESISTANCE OF A SUPERCONDUCTING GRANULAR LEAD FILM J. SCHMIDT, A. SCHENSTROM et M. LEVYJ. Phys. Colloques, 46 C10 (1985) C10-711-C10-714DOI: https://doi.org/10.1051/jphyscol:198510156