VALENCE CHANGE IN Yb INTERMETALLICS INDUCED BY TEMPERATURE AND MAGNETIC FIELD K. Yoshimura, T. Nitta, M. Mekata, T. Shimizu, T. Sakakibara, T. Goto and G. Kido J. Phys. Colloques, 49 C8 (1988) C8-731-C8-732 DOI: 10.1051/jphyscol:19888332