YOUNIS, T. A. Multiple Mixing Ratios of Gamma Rays. Ibn AL-Haitham Journal For Pure and Applied Sciences, Baghdad, Iraq., v. 22, n. 4, 2017. Disponível em: https://jih.uobaghdad.edu.iq/index.php/j/article/view/1159. Acesso em: 29 mar. 2025.