“Study of the Effect of Ultraviolet Radiation on the Photodegradation of Polystyrene Films Doped With Schiff Bases”. Samarra Journal of Pure and Applied Science 5, no. 3 (September 30, 2023): 21–35. Accessed May 2, 2026. https://www.sjpas.com/index.php/sjpas/article/view/493.