E. AL-ABDULLAH, A. The Electron Optical Properties of the Round Magnetic Electron Lens. Rafidain Journal of Science, [S. l.], v. 17, n. 3, p. 59–69, 2006. DOI: 10.33899/rjs.2006.43406. Disponível em: https://jamh.uomosul.edu.iq/index.php/rsci/article/view/47398. Acesso em: 29 sep. 2025.