Determination the dispersion parameters and urbach tail of iron chromate doped PMMA films. Iraqi Journal of Physics, [S. l.], v. 10, n. 17, p. 12–17, 2012. Disponível em: https://ijp.uobaghdad.edu.iq/index.php/physics/article/view/767.. Acesso em: 13 may. 2024.