ERNAWAN, F.; RAMALINGAM, M.; SADIQ, A. S.; MUSTAFFA, Z. An Improved Imperceptibility and Robustness of 4x4 DCT-SVD Image Watermarking with a Modified Entropy. Journal of Telecommunication, Electronic and Computer Engineering (JTEC), [S. l.], v. 9, n. 2-7, p. 111–116, 2017. Disponível em: https://jtec.utem.edu.my/jtec/article/view/2602. Acesso em: 25 apr. 2024.