Saleh, A. Z. “A Study on the Shoulder of Cell Survival Curve in Relation With Repair Capacity of Cells After Being Irradiated”. Ibn AL-Haitham Journal For Pure and Applied Sciences, vol. 19, no. 1, Nov. 2017, pp. 34-42, https://jih.uobaghdad.edu.iq/index.php/j/article/view/1532.