KHANDUJA, V.; CHAKRAVERTY, S.; VERMA, O. P. Watermarking Categorical Data : Algorithm and Robustness Analysis. Defence Science Journal, [S. l.], v. 65, n. 3, p. 226–232, 2015. DOI: 10.14429/dsj.65.8444. Disponível em: https://publications.drdo.gov.in/ojs/index.php/dsj/article/view/8444. Acesso em: 15 jun. 2025.