| A framework for concrete reputation-systems with applications to history-based access control Recent countries visiting this post |  |
 | 3 | United States |
 | 1 | |
 | 1 | Germany |
| A framework for concrete reputation-systems with applications to history-based access control Recent countries visiting this post | |
| 3 | United States |
| 1 | |
| 1 | Germany |