Effect of superimposed oscillations on characteristics of Al-40 wt.% Zn alloy F. Abd El-Salam, A. M. Abd El-Khalek and R. H. Nada Eur. Phys. J. AP, 12 3 (2000) 159-167 Published online: 15 December 2000 DOI: 10.1051/epjap:2000184