S. S. Shafik, “Measurement of Background Radioactivity in Baghdad’s Main Water Supply Stations: Sediment Samples”, IJP, vol. 9, no. 14, pp. 57–69, Jan. 2011, Accessed: May 03, 2025. [Online]. Available: https://www.ijp.uobaghdad.edu.iq/index.php/physics/article/view/816