A. Solyman, W., M. S. Buni, and S. A. Ali. “Effect of Gamma-Ray and Temperature on the Viscosity of Polystyrene”. Journal of Education and Science (JES) 26, no. 1 (March 1, 2013): 40–48. Accessed August 6, 2025. https://ojs.uomosul.edu.iq/index.php/edusj/article/view/23232.