Three Dimensional Discrete Wavelet Transform Based Robust Multiple Watermarking Algorithm for Spectral Images. Global Journals of Research in Engineering, [S. l.], v. 11, n. I7, p. 9–16, 2011. Disponível em: https://testing.engineeringresearch.org/index.php/GJRE/article/view/268. Acesso em: 6 jun. 2026.