INTERFACE PHENOMENA IN THE FIELD ION AND FIELD ELECTRON ENERGY SPECTROSCOPY OF HIGH-Tc SUPERCONDUCTORS N. ERNST, G. BOZDECH, W.A. SCHMIDT, M. NASCHITZKI et A.J. MELMED J. Phys. Colloques, 50 C8 (1989) C8-471-C8-475 DOI: 10.1051/jphyscol:1989880