INFLUENCE OF PREPARATION PROCESS ON PHYSICAL PROPERTIES AND DEVITRIFICATION OF Li2B2O4 (0,9) LiFe5O8 (0,1) GLASSES C. Martin, C. Chaumont, J.P. Sanchez et J.C . Bernier J. Phys. Colloques, 46 C8 (1985) C8-585-C8-589 DOI: 10.1051/jphyscol:1985893