SURFACE AND THIN-FILM STUDIES BY PHOTOACOUSTIC SPECTROSCOPY APPLIED TO INORGANIC AND BIOLOGICAL MATERIALS G.F. Kirkbright, R.M. Miller, D.E.M. Spillane et I.P. Vickery J. Phys. Colloques, 44 C6 (1983) C6-243-C6-247 DOI: 10.1051/jphyscol:1983638