Improved Watermark Criteria Through Mark image. NTU Journal of Engineering and Technology, [S. l.], v. 1, n. 2, p. 36–39, 2022. DOI: 10.56286/ntujet.v1i2.131. Disponível em: https://journals.ntu.edu.iq/index.php/NTU-JET/article/view/131.. Acesso em: 18 apr. 2025.