Romankov V. A. «Diophantine cryptography over innite groups» //  2012. №2(16) C.15-42
                                                    
                        Roman'kov V.A. «Cryptanalysis of a diffie - hellman's scheme analogue using conjugation and exponentiation on matrix platform» // Applied Discrete Mathematics 2014. №7 (Приложение) C.56-58
                                                    
                        Roman'kov V.A. «Cryptanalysis of a diffie - hellman's scheme analogue using conjugation and exponentiation on matrix platform» //  2014. №7 C.56-58