“Effect of X-Ray Radiation on Electro-Optical Characteristics of CR-39 Sheets by Using Microwave and FTIR Spectroscopy Techniques”. Al-Nahrain Journal of Science 15, no. 4 (December 1, 2012): 138–143. Accessed May 13, 2024. https://anjs.edu.iq/index.php/anjs/article/view/592.