Novel Technology for Image Steganography Based on Multi-level DWT and Block Permutation System . Journal of Madenat Alelem, [S. l.], v. 4, n. 1, p. 70–87, 2012. Disponível em: https://journal.mauc.edu.iq/index.php/JMAUC/article/view/242. Acesso em: 24 feb. 2026.