1. Binary Quadratic Forms. An Algorithmic Approach;Buchmann,2007
2. Modified RSA in the domains of Gaussian integers and polynomials over finite fields;El-Kassar,2005
3. Extended RSA cryptosystem and digital signature schemes in the domain of Gaussian integers;Elkamchouchi,2002
4. Lectures on the Theory of Algebraic Numbers;Gekke,1940
5. Introduction to Number Theoretical Methods in Cryptography;Glukhov,2011