Countinho, S. S. (1999). Mathamatics of ciphers: Number theory and RSA cryptography. Universities Press.
Dyfyniad Arddull ChicagoCountinho, S S. Mathamatics of Ciphers: Number Theory and RSA Cryptography. Hyderabad: Universities Press, 1999.
Dyfyniad MLACountinho, S S. Mathamatics of Ciphers: Number Theory and RSA Cryptography. Universities Press, 1999.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.