Al-Obaydi, Raad . A, Wisam Salih, and Anwar S. Al-Dahan. 2012. “Treatment of Nasopharyngeal Carcinoma by Using Deep X-Ray Therapy”. AL-Kindy College Medical Journal 8 (1): 92-96. https://jkmc.uobaghdad.edu.iq/index.php/MEDICAL/article/view/619.