Mustafa, Luqman Mohammed, and Harith Raad Hasan. “A Novel Robust Approach of Optimized Hybrid Watermarking Scheme for Color Images Using DWT, DCT, Permutation, and PSO”. Iraqi Journal of Science 67, no. 5 (May 30, 2026): 2975–2993. Accessed July 3, 2026. https://www.ijs.uobaghdad.edu.iq/index.php/eijs/article/view/15152.