Anh Duc, Duong, Nguyen Thanh Son, and Tran Minh Triet. “APPLYING AES - DCT WATERMARKING IN DATA SECURITY”. Science and Technology Development Journal 7, no. 4&5 (May 31, 2004): 77-82. Accessed December 22, 2024. http://stdj.scienceandtechnology.com.vn/index.php/stdj/article/view/3199.