Steganography using dual tree complex wavelet transform with LSB indicator technique. Periodicals of Engineering and Natural Sciences, [S. l.], v. 9, n. 2, p. 1106–1114, 2021. DOI: 10.21533/pen.v9.i2.812. Disponível em: https://pen.ius.edu.ba/index.php/pen/article/view/812. Acesso em: 21 aug. 2026.