ET. AL., R. S. raam, . Dct Based Image Watermarking. Turkish Journal of Computer and Mathematics Education (TURCOMAT), [S. l.], v. 12, n. 10, p. 1281–1288, 2021. Disponível em: https://www.turcomat.org/index.php/turkbilmat/article/view/4387. Acesso em: 5 may. 2024.