Shafik, Shafik S, Gaith Niama Flaiyh, and Akram M Ali. “Nuclear Level Density Parameter of 161−168Er and 204−210Bi Deforme Nuclei”. Al-Nahrain Journal of Science 17, no. 3 (June 28, 2018): 81–87. Accessed May 22, 2026. https://mail.anjs.edu.iq/index.php/anjs/article/view/407.