Correction of Spherical Aberration of an Immersion Lens Operating Under Space Charge Effect Described by a 2nd Order Equation. Iraqi Journal of Physics, [S. l.], v. 8, n. 12, p. 80–85, 2010. Disponível em: https://ijp.uobaghdad.edu.iq/index.php/physics/article/view/854.. Acesso em: 15 may. 2024.