NISHA; KUSUM. Data Hiding in Image by Optimal Random Substitution. International Journal of Computer Sciences and Engineering, [S. l.], v. 2, n. 6, p. 22–24, 2014. Disponível em: https://ijcse.isroset.org/index.php/j/article/view/182. Acesso em: 2 feb. 2026.