X-ray Protection Using Mixture of Cement Shielding with Barium Sulfate. Journal of Science and Technology, [S. l.], v. 20, n. 2, p. 35–44, 2015. DOI: 10.20428/jst.v20i2.938. Disponível em: https://journals.ust.edu/index.php/JST/article/view/938. Acesso em: 20 jul. 2025.