CHIAD, Baha T. Study the spectroscopy of samarium encapsulated in silica Xerogel matrices. Iraqi Journal of Physics, Baghdad, Iraq., v. 9, n. 15, p. 49–54, 2011. Disponível em: https://ijp.uobaghdad.edu.iq/index.php/physics/article/view/801. Acesso em: 14 mar. 2025.