Study the spectroscopy of samarium encapsulated in silica Xerogel matrices. Iraqi Journal of Physics, [S. l.], v. 9, n. 15, p. 49–54, 2011. Disponível em: https://ijp.uobaghdad.edu.iq/index.php/physics/article/view/801.. Acesso em: 15 may. 2024.