HAGER , I. Z. .; SALEH , I. A. . Effect of Er2O3 and ErF3 on the optical properties of sodium oxyfluoroborate glasses. The Scientific Journal of University of Benghazi, [S. l.], v. 35, n. 2, 2022. Disponível em: https://journals.uob.edu.ly/sjuob/article/view/3805. Acesso em: 3 dec. 2023.