Nassef MH and Nawal M. Said (2019) “Determination of Uranium, Thorium,238U/232Th Activity Ratio and Rare Earth Elements Distribution Using Neutron Activation Analysis (NAA)”, International Journal of Life Sciences. India, 7(4), pp. 616–624. Available at: https://ijlsci.in/ls/index.php/home/article/view/274 (Accessed: 7 November 2024).