Dheyauldeen Najeeb, Huda. “New Techniques of Watermark Images Using Bit Plane Slicing and Cubic-Spline Interpolation”. Ibn AL-Haitham Journal For Pure and Applied Sciences 32, no. 3 (September 16, 2019): 184–192. Accessed March 26, 2025. https://jih.uobaghdad.edu.iq/index.php/j/article/view/2295.