X-RAY ABSORPTION SPECTROSCOPY ON AMORPHOUS MIXED-VALENT ALLOYS D. MALTERRE, A. SIARI, J. DURAND, G. KRILL et G. MARCHAL J. Phys. Colloques, 47 C8 (1986) C8-991-C8-995 DOI: 10.1051/jphyscol:19868191