HUSSEIN, B. J.; HASHIM, I. H.; NASRALLAH, D. A. Ion Beam Focusing in Solenoid Magnetic Field. Ibn AL-Haitham Journal For Pure and Applied Sciences, [S. l.], v. 27, n. 3, p. 291–299, 2017. Disponível em: https://jih.uobaghdad.edu.iq/index.php/j/article/view/295. Acesso em: 27 jun. 2022.