Influence of aluminium ions on physical properties of PbO-P2O5-As2O3 glasses G. Sahaya Baskaran, N. Krishna Mohan, V. Venkateswara Rao, D. Krishna Rao and N. Veeraiah Eur. Phys. J. Appl. Phys., 34 2 (2006) 97-106 Published online: 25 May 2006 DOI: 10.1051/epjap:2006049