Comparison between Two Types of Electrodes for Electrostatic Quadrupole Lens. مجلة كلية مدينة العلم الجامعة, [S. l.], v. 5, n. 2, p. 50–62, 2013. Disponível em: https://journal.mauc.edu.iq/index.php/JMAUC/article/view/201. Acesso em: 27 فبراير. 2026.