X-ray spectroscopy of the metal-insulator transition in Yb1-xGdxTe and Yb1-xLaxTe S. Merah, D. Ravot, A. Mauger, A. Percheron-Guégan, J. C. Dumas, J. Olivier-Fourcade and O. Gorochov Eur. Phys. J. B, 6 4 (1998) 487-496 Published online: 15 December 1998 DOI: 10.1007/s100510050575