“Photochemical Study of Different Thicknesses of Polystyrene Films Containing Ni(II) Complex against photodegradation” (2019) Al-Nahrain Journal of Science, 22(4), pp. 30–41. Available at: https://mail.anjs.edu.iq/index.php/anjs/article/view/2208 (Accessed: 23 December 2024).