DETERMINATION OF DENSITIES OF VALENCE STATES BY THE COMBINED USE OF UV AND X-RAY PHOTOEMISSION N. J. SHEVCHIK, J. TEJEDA, M. CARDONA et D. W. LANGER J. Phys. Colloques, 34 C6 (1973) C6-45-C6-49 DOI: 10.1051/jphyscol:1973611