STUDY OF SURFACES COVERED BY THIN FILMS, BY SPEC AND RAMAN SPECTROSCOPY M. Froelicher, A. Hugot-Le Goff, V. Jovancicevic, R. Dupeyrat et M. Masson J. Phys. Colloques, 44 C10 (1983) C10-187-C10-190 DOI: 10.1051/jphyscol:19831038