JASEM, Bilal Khalied. Correction of Spherical Aberration of an Immersion Lens Operating Under Space Charge Effect Described by a 2nd Order Equation. Iraqi Journal of Physics, Baghdad, Iraq., v. 8, n. 12, p. 80–85, 2010. Disponível em: https://ijp.uobaghdad.edu.iq/index.php/physics/article/view/854. Acesso em: 23 dec. 2024.