R El-Mallawany, MD Abdalla, IA Ahmed - Materials Chemistry and Physics, 2008 - Elsevier
The refractive index and UV spectra of the quaternary tellurite glass system of the form
80TeO2–5TiO2–(15− x) WO3–xAnOm where AnOm is Nb2O5, Nd2O3 and Er2O3, x= 0.01 …