@incollection{Hussain11,
author = {Raad Obid Hussain and Hayder Hamza Hussain},
title = {Natural Occurring Radionuclide Materials},
booktitle = {Radioisotopes},
publisher = {IntechOpen},
address = {Rijeka},
year = {2011},
editor = {Nirmal Singh},
chapter = {1},
doi = {10.5772/20562},
url = {https://doi.org/10.5772/20562}
}