Bismuth Tellurite Glasses : UpConversion Luminescence Properties: A Review.Published in:Journal of Ultra Scientist of Physical Sciences - Section A (Mathematics), 2020, v. 32, n. 4, p. 22, doi. 10.22147/jusps-a/320401By:JAT, SUNIL;JAYASWAL, Y. K.;ANSARI, GHIZAL F.Publication type:Article