LOCALIZATION OF 5f STATES IN VARIOUS URANIUM AND THORIUM OXIDES AND GLASSES J. PETIAU, G. CALAS, D. PETIT-MAIRE, A. BIANCONI, M. BENFATTO et A. MARCELLI J. Phys. Colloques, 47 C8 (1986) C8-949-C8-953 DOI: 10.1051/jphyscol:19868182