Abojassim, A. . A., Q. . B. Muhamad, N. . A. Jafer, and H. . A. Mohammed. “Natural Radioactivity Levels in Healthy and Groundwater Samples of Al-Manathera Region of Al-Najaf, Iraq”. Jordan Journal of Physics, vol. 15, no. 4, Apr. 2025, https://jjp.yu.edu.jo/index.php/jjp/article/view/594.