SURFACE SEGREGATIONS IN EMBRITTLED (FexNi1-x)z (PyB1-y)1-z GLASSY RIBBONS BY AUGER ELECTRON SPECTROSCOPY D. Bijaoui, A.R. Yavari and J.C. Joud J. Phys. Colloques, 46 C8 (1985) C8-437-C8-441 DOI: 10.1051/jphyscol:1985867