Investigations of the Elastic Moduli of Er2O3 NPs Doped TeO2 – B2O3 – SiO2 Glasses using Theoretical Models. J. Nig. Soc. Phys. Sci. [Internet]. 2022 Feb. 27 [cited 2024 Apr. 27];4(1):9-15. Available from: https://www.journal.nsps.org.ng/index.php/jnsps/article/view/222