MAGNETIC CLUSTERS IN Y-Ni AMORPHOUS ALLOYS NEAR THE CRITICAL CONCENTRATION A. Liénard, J.P. Rebouillat, P. Garoche and J.J. Veyssié J. Phys. Colloques, 41 C8 (1980) C8-658-C8-661 DOI: 10.1051/jphyscol:19808165