STRUCTURAL CHANGES IN INVAR IRON-PALLADIUM ALLOYS BEFORE THE f.c.c.- b.c.t. MARTENSITIC TRANSFORMATION M. Foos, C. Frantz et M. Gantois J. Phys. Colloques, 43 C4 (1982) C4-389-C4-394 DOI: 10.1051/jphyscol:1982457