LOW TEMPERATURE ANOMALY OF ELASTIC CONSTANTS IN Fe-Ni AND Fe65 (Ni1-xMnx)35 INVAR ALLOYS M. Shiga, K. Makita, K. Uematsu et Y. Nakamura J. Phys. Colloques, 49 C8 (1988) C8-309-C8-310 DOI: 10.1051/jphyscol:19888139