SANJEEVANI SUBHASH KAGADE; SUDHIR S. KANADE. ROBUST DIGITAL IMAGE WATERMARKING BY USING DCT TECHNIQUE . International Journal of Innovations in Engineering Research and Technology, Maharashatra, India, p. 1–7, 2021. Disponível em: https://repo.ijiert.org/index.php/ijiert/article/view/707. Acesso em: 29 jun. 2025.