I. OPTICS AND PHOTOEMISSIONFANO-RESONANCES, SURFACE AND BULK EFFECTS IN PHOTOEMISSION FROM THE RARE EARTHS W. Gudat, S.F. Alvarado, M. Campagna et Y. Pétroff J. Phys. Colloques, 41 C5 (1980) C5-1-C5-7 DOI: 10.1051/jphyscol:1980501