ULTRASONIC ATTENUATION AND OCCURENCE OF THE MARTENSITIC TRANSFORMATION IN THE HIGH Tc A15 COMPOUND V3Si A.F. Khoder, M. Couach et E. Bonjour J. Phys. Colloques, 42 C5 (1981) C5-1085-C5-1090 DOI: 10.1051/jphyscol:19815168