Structural and optical properties for PVA- PEG-MnCl2 composites. Iraqi Journal of Physics, [S. l.], v. 15, n. 32, p. 99–113, 2019. DOI: 10.30723/ijp.v15i32.160. Disponível em: https://ijp.uobaghdad.edu.iq/index.php/physics/article/view/160.. Acesso em: 27 apr. 2024.