Breaking a Playfair Cipher Using Memetic Algorithm. Journal of Engineering and Sustainable Development, [S. l.], v. 17, n. 5, p. 172–183, 2013. Disponível em: https://jeasd.uomustansiriyah.edu.iq/index.php/jeasd/article/view/1084.. Acesso em: 14 may. 2024.