JUMA, Sabah M. A Hyperbolic Potential Field Model for Designing an Einzel Lens of Low Aberrations. Iraqi Journal of Physics, Baghdad, Iraq., v. 1, n. 1, p. 59–66, 2002. Disponível em: https://ijp.uobaghdad.edu.iq/index.php/physics/article/view/955. Acesso em: 24 dec. 2024.