ALDEEN ABAD KHALID, Rajaa; ALA’A HUSSAIN, Aman. MULTI-LEVEL STEGANOGRAPHY SYSTEM USING WAVELET TRANSFORM. Journal of Engineering and Sustainable Development, Baghdad, Iraq, v. 22, n. 3, p. 50–61, 2018. Disponível em: https://jeasd.uomustansiriyah.edu.iq/index.php/jeasd/article/view/373.. Acesso em: 8 may. 2025.