K. Shamoon, Sabeeh, and صبيح. “Geometrical Effects on the XRF Spectrometer Data Validity Using Hypothetical 20 KeV Photon Source”. Rafidain Journal of Science 22, no. 3 (June 24, 2025): 50–57. Accessed August 6, 2025. https://rjps.uomosul.edu.iq/index.php/rsci/article/view/12754.