NEUTRON DIFFRACTION STUDIES OF RARE EARTH IONS IN GLASSES A. C. Wright, G. Etherington, J. A. Erwin Desa et R. N. SinclairJ. Phys. Colloques, 43 C9 (1982) C9-31-C9-34DOI: https://doi.org/10.1051/jphyscol:1982905