6Van Schyndel RG,Tirkel AZ,Osborne CF.A digital watermarking[].IEEE Proceedings on International Conference on Image Processing.1994
7Shafi Goldwasser,Silvio Micali,Ronald L Rivest.A digital signature scheme secure against adaptive chosen-message attacks. SIAM Journal on Computing . 1988
8Anthony S,Constance P S,Joshua M.Crypto currencies:core information technology and information system fundamentals enabling currency without borders. Information Systems Education Journal . 2015
9Melanie S.Blockchain:blueprint for a new economy. . 2015
