Synthesis of Nanosilica Glass Activated by Erbium Ions, Spectroscopic studies. Iraqi Journal of Physics, [S. l.], v. 7, n. 8, p. 85–92, 2009. Disponível em: https://ijp.uobaghdad.edu.iq/index.php/physics/article/view/921.. Acesso em: 17 may. 2024.