X-RAY AND UV PHOTOELECTRON SPECTRA FROM OUTER ELECTRONS OF SOME RARE EARTHS S. B. M. HAGSTRÖM, G. BRODÉN, P. O. HÉDEN et H. LÖFGREN J. Phys. Colloques, 32 C4 (1971) C4-269-C4-273 DOI: 10.1051/jphyscol:1971449