M. Yousuf, Rasheed. “Measurement of Natural Radioactivity in Some Marble Samples Used As Building Materials”. Rafidain Journal of Science 19, no. 2 (June 24, 2025): 134–143. Accessed August 5, 2025. https://ojs.uomosul.edu.iq/index.php/rsci/article/view/12680.