Effect of Zn incorporation on the a.c. conductivity of glassy Se70Te30 alloyS. Srivastava, N. Mehta, R. K. Shukla and A. KumarEur. Phys. J. Appl. Phys., 44 3 (2008) 217-221DOI: https://doi.org/10.1051/epjap:2008171