Effects of Variation of Plasma and Cyclotronic Frequencies on Nonlinear Permittivity. IRAQI JOURNAL OF MATERIALS, [S. l.], v. 2, n. 2, p. 69–74, 2024. Disponível em: https://ijmaterials.com/index.php/ijm/article/view/33. Acesso em: 5 sep. 2026.