EARLY STAGES OF METAL-Si (Ge) COUMPOUND FORMATION : A FIM STUDY OF INTERFACIAL ATOMIC STRUCTURES H.F. LIU, H.M. LIU et T.T. TSONG J. Phys. Colloques, 47 C7 (1986) C7-327-C7-332 DOI: 10.1051/jphyscol:1986756