@article{al-tweissi_2025,  title={Study the Effect of Copper Chloride II (CuCl<sub>2</sub>) on Optical Properties of Polyvinyl Alcohol (PVA)},  volume={28},  ISSN={1516-1439},  url={https://doi.org/10.1590/1980-5373-MR-2025-0201},  DOI={10.1590/1980-5373-MR-2025-0201},  journal={Materials Research},  publisher={ABM, ABC, ABPol},  author={Al-Tweissi, Mohammed},  year={2025},  pages={e20250201} }