Variation of Velocity and Potential of Orbit Bounded Electron with Free Electron Beam. European Journal of Applied Physics, [S. l.], v. 3, n. 5, p. 1–6, 2021. DOI: 10.24018/ejphysics.2021.3.5.85. Disponível em: https://www.ej-physics.org/index.php/ejphysics/article/view/85. Acesso em: 10 sept. 2025.