Preparation and Study of the Optical Properties of Recycled Materials of Polymethyl methacryalate Doped with Different Ratios of 4-(2- Pyridylazo) Resorcinol Monosodium Salt Hydrate. Baghdad Science Journal, Iraq, Baghdad, v. 21, n. 12, p. 3846–3856, 2024. DOI: 10.21123/bsj.2024.7953. Disponível em: https://bsj.uobaghdad.edu.iq/index.php/BSJ/article/view/7953.. Acesso em: 15 jan. 2025.