Vacuum ultraviolet photoionization of the 5d elements in the region of the 5p and 4f excitation M. Martins, P. Sladeczek, K. Tiedtke and P. Zimmermann Eur. Phys. J. D, 1 1 (1998) 47-52 Published online: 15 January 1998 DOI: 10.1007/s100530050062