Mahmuoud Aman Allah, S., L. saad Abdual Baqi, N. Ahmad Daham, and S. Amear Mahdyi. “Implantation Profile for Low Energy Positrons in Diamond”. Al-Qadisiyah Journal of Pure Science, Vol. 20, no. 4, Aug. 2018, pp. 105 -11, https://journalsc.qu.edu.iq/index.php/JOPS/article/view/869.