57Fe HYPERFINE INTERACTION MEASUREMENTS IN AN IRON CONCENTRATED OXIDE GLASS Fe203(30)BaO(45)B2O3(25) J.M. Friedt, A. Bonnenfant, H. Laville et J.C. Bernier J. Phys. Colloques, 41 C1 (1980) C1-273-C1-274 DOI: 10.1051/jphyscol:1980195