OJHA, V.; SINGH, R. Cryptography for Secure E-mail Communication. International Journal on Recent and Innovation Trends in Computing and Communication, [S. l.], v. 7, n. 2, p. 67–71, 2019. DOI: 10.17762/ijritcc.v7i2.5341. Disponível em: https://mail.ijritcc.org/index.php/ijritcc/article/view/5341. Acesso em: 13 sep. 2025.