Spectroscopic properties of MO-WO3-P2O5: Ho3+ glassesP. Subbalakshmi, B. V. Raghavaiah, R. Balaji Rao, N. Veeraiah, P. Babu and C. K. JayasankarEur. Phys. J. Appl. Phys., 26 3 (2004) 169-176DOI: https://doi.org/10.1051/epjap:2004035