Ahmed, Firas Hashem, Ali N. Mohammed, Mahmood Salim Karim, and Hazim Louis Mansour. “Measurement of Radioactivity in Some Commercial Porcelain Samples by Using HPGe Detector”. Ibn AL- Haitham Journal For Pure and Applied Sciences 33, no. 2 (April 20, 2020): 19–24. Accessed May 20, 2022. https://jih.uobaghdad.edu.iq/index.php/j/article/view/2439.