1 | | Digital Payment Systems : Risks, Security, and Privacy Issue . - New York : Smarter Better Faster, 2010. - 320 tr ; 24 cm Số Đăng ký cá biệt: 200002927 |
2 | | Handbook of Research on Mobile Payments and Banking : Utilizing Cryptocurrency Technologies . - New York : Springer Science, 2010. - 515 tr ; 24 cm Số Đăng ký cá biệt: 200002926 |