Dielectric Dispersion in CuO Doped ZnF$_2$-PbO-TeO$_2$ Glasses V. Ravi Kumar, N. Veeraiah, S. Buddhudu et V. Jaya Tyaga Raju J. Phys. III France, 7 5 (1997) 951-961 DOI: 10.1051/jp3:1997167